Finding the Fourth Proportional to 9,109.57, 12,577.01 and 7,434.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,109.57 : 12,577.01 = 7,434.97 : x
2. Step 2: Convert to fraction form
   9,109.57/12,577.01 = 7,434.97/x
3. Step 3: Cross multiply
   9,109.57x = 12,577.01 × 7,434.97
4. Step 4: Simplify right side
   9,109.57x = 93,509,651.30
5. Step 5: Solve for x
   x = 93,509,651.30/9,109.57
6. Step 6: Final answer
   x = 10,264.99