Finding the Fourth Proportional to 9,124.16, 12,588.96 and 5,396.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.16 : 12,588.96 = 5,396.48 : x
2. Step 2: Convert to fraction form
   9,124.16/12,588.96 = 5,396.48/x
3. Step 3: Cross multiply
   9,124.16x = 12,588.96 × 5,396.48
4. Step 4: Simplify right side
   9,124.16x = 67,936,070.86
5. Step 5: Solve for x
   x = 67,936,070.86/9,124.16
6. Step 6: Final answer
   x = 7,445.73