Finding the Fourth Proportional to 9,129.26, 12,598.56 and 5,149.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,129.26 : 12,598.56 = 5,149.61 : x
2. Step 2: Convert to fraction form
   9,129.26/12,598.56 = 5,149.61/x
3. Step 3: Cross multiply
   9,129.26x = 12,598.56 × 5,149.61
4. Step 4: Simplify right side
   9,129.26x = 64,877,607.57
5. Step 5: Solve for x
   x = 64,877,607.57/9,129.26
6. Step 6: Final answer
   x = 7,106.56