Finding the Fourth Proportional to 9,103.86, 12,561.89 and 5,124.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,103.86 : 12,561.89 = 5,124.20 : x
2. Step 2: Convert to fraction form
   9,103.86/12,561.89 = 5,124.20/x
3. Step 3: Cross multiply
   9,103.86x = 12,561.89 × 5,124.20
4. Step 4: Simplify right side
   9,103.86x = 64,369,548.31
5. Step 5: Solve for x
   x = 64,369,548.31/9,103.86
6. Step 6: Final answer
   x = 7,070.58