Finding the Fourth Proportional to 8,892.31, 12,262.17 and 7,637.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,892.31 : 12,262.17 = 7,637.50 : x
2. Step 2: Convert to fraction form
   8,892.31/12,262.17 = 7,637.50/x
3. Step 3: Cross multiply
   8,892.31x = 12,262.17 × 7,637.50
4. Step 4: Simplify right side
   8,892.31x = 93,652,323.38
5. Step 5: Solve for x
   x = 93,652,323.38/8,892.31
6. Step 6: Final answer
   x = 10,531.83