Finding the Fourth Proportional to 9,400.61, 12,943.23 and 7,155.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,400.61 : 12,943.23 = 7,155.29 : x
2. Step 2: Convert to fraction form
   9,400.61/12,943.23 = 7,155.29/x
3. Step 3: Cross multiply
   9,400.61x = 12,943.23 × 7,155.29
4. Step 4: Simplify right side
   9,400.61x = 92,612,499.47
5. Step 5: Solve for x
   x = 92,612,499.47/9,400.61
6. Step 6: Final answer
   x = 9,851.76