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Finding the Fourth Proportional to 7,470.72, 11,202.84 and 2,788.92

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Solution

The fourth proportional to 7,470.72, 11,202.84 and 2,788.92 is: 4,182.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,470.72 : 11,202.84 = 2,788.92 : x
  2. Step 2: Convert to fraction form
    7,470.72/11,202.84 = 2,788.92/x
  3. Step 3: Cross multiply
    7,470.72x = 11,202.84 × 2,788.92
  4. Step 4: Simplify right side
    7,470.72x = 31,243,824.53
  5. Step 5: Solve for x
    x = 31,243,824.53/7,470.72
  6. Step 6: Final answer
    x = 4,182.17

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