Finding the Fourth Proportional to 9,059.88, 13,591.86 and 4,128.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,059.88 : 13,591.86 = 4,128.18 : x
2. Step 2: Convert to fraction form
   9,059.88/13,591.86 = 4,128.18/x
3. Step 3: Cross multiply
   9,059.88x = 13,591.86 × 4,128.18
4. Step 4: Simplify right side
   9,059.88x = 56,109,644.61
5. Step 5: Solve for x
   x = 56,109,644.61/9,059.88
6. Step 6: Final answer
   x = 6,193.20