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Finding the Fourth Proportional to 19,215.72, 28,811.16 and 7,530.12

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Solution

The fourth proportional to 19,215.72, 28,811.16 and 7,530.12 is: 11,290.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.72 : 28,811.16 = 7,530.12 : x
  2. Step 2: Convert to fraction form
    19,215.72/28,811.16 = 7,530.12/x
  3. Step 3: Cross multiply
    19,215.72x = 28,811.16 × 7,530.12
  4. Step 4: Simplify right side
    19,215.72x = 216,951,492.14
  5. Step 5: Solve for x
    x = 216,951,492.14/19,215.72
  6. Step 6: Final answer
    x = 11,290.31

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