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Finding the Fourth Proportional to 19,788.95, 29,678.62 and 6,637.91

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Solution

The fourth proportional to 19,788.95, 29,678.62 and 6,637.91 is: 9,955.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.95 : 29,678.62 = 6,637.91 : x
  2. Step 2: Convert to fraction form
    19,788.95/29,678.62 = 6,637.91/x
  3. Step 3: Cross multiply
    19,788.95x = 29,678.62 × 6,637.91
  4. Step 4: Simplify right side
    19,788.95x = 197,004,008.48
  5. Step 5: Solve for x
    x = 197,004,008.48/19,788.95
  6. Step 6: Final answer
    x = 9,955.25

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