Finding the Fourth Proportional to 9,087.59, 12,539.85 and 5,107.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,087.59 : 12,539.85 = 5,107.86 : x
2. Step 2: Convert to fraction form
   9,087.59/12,539.85 = 5,107.86/x
3. Step 3: Cross multiply
   9,087.59x = 12,539.85 × 5,107.86
4. Step 4: Simplify right side
   9,087.59x = 64,051,779.07
5. Step 5: Solve for x
   x = 64,051,779.07/9,087.59
6. Step 6: Final answer
   x = 7,048.27