Finding the Fourth Proportional to 9,111.91, 12,574.38 and 5,132.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.91 : 12,574.38 = 5,132.92 : x
2. Step 2: Convert to fraction form
   9,111.91/12,574.38 = 5,132.92/x
3. Step 3: Cross multiply
   9,111.91x = 12,574.38 × 5,132.92
4. Step 4: Simplify right side
   9,111.91x = 64,543,286.59
5. Step 5: Solve for x
   x = 64,543,286.59/9,111.91
6. Step 6: Final answer
   x = 7,083.40