Finding the Fourth Proportional to 9,111.28, 12,573.32 and 5,132.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.28 : 12,573.32 = 5,132.43 : x
2. Step 2: Convert to fraction form
   9,111.28/12,573.32 = 5,132.43/x
3. Step 3: Cross multiply
   9,111.28x = 12,573.32 × 5,132.43
4. Step 4: Simplify right side
   9,111.28x = 64,531,684.77
5. Step 5: Solve for x
   x = 64,531,684.77/9,111.28
6. Step 6: Final answer
   x = 7,082.61