Finding the Fourth Proportional to 9,111.43, 12,574.04 and 5,132.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.43 : 12,574.04 = 5,132.91 : x
2. Step 2: Convert to fraction form
   9,111.43/12,574.04 = 5,132.91/x
3. Step 3: Cross multiply
   9,111.43x = 12,574.04 × 5,132.91
4. Step 4: Simplify right side
   9,111.43x = 64,541,437.14
5. Step 5: Solve for x
   x = 64,541,437.14/9,111.43
6. Step 6: Final answer
   x = 7,083.57