Finding the Fourth Proportional to 8,242.41, 12,428.27 and 7,553.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,242.41 : 12,428.27 = 7,553.50 : x
2. Step 2: Convert to fraction form
   8,242.41/12,428.27 = 7,553.50/x
3. Step 3: Cross multiply
   8,242.41x = 12,428.27 × 7,553.50
4. Step 4: Simplify right side
   8,242.41x = 93,876,937.45
5. Step 5: Solve for x
   x = 93,876,937.45/8,242.41
6. Step 6: Final answer
   x = 11,389.50