Finding the Fourth Proportional to 9,868.62, 13,615.59 and 5,887.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,868.62 : 13,615.59 = 5,887.74 : x
2. Step 2: Convert to fraction form
   9,868.62/13,615.59 = 5,887.74/x
3. Step 3: Cross multiply
   9,868.62x = 13,615.59 × 5,887.74
4. Step 4: Simplify right side
   9,868.62x = 80,165,053.87
5. Step 5: Solve for x
   x = 80,165,053.87/9,868.62
6. Step 6: Final answer
   x = 8,123.23