Finding the Fourth Proportional to 9,126.61, 12,594.72 and 5,147.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,126.61 : 12,594.72 = 5,147.71 : x
2. Step 2: Convert to fraction form
   9,126.61/12,594.72 = 5,147.71/x
3. Step 3: Cross multiply
   9,126.61x = 12,594.72 × 5,147.71
4. Step 4: Simplify right side
   9,126.61x = 64,833,966.09
5. Step 5: Solve for x
   x = 64,833,966.09/9,126.61
6. Step 6: Final answer
   x = 7,103.84