Finding the Fourth Proportional to 9,868.52, 13,618.71 and 5,891.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,868.52 : 13,618.71 = 5,891.96 : x
2. Step 2: Convert to fraction form
   9,868.52/13,618.71 = 5,891.96/x
3. Step 3: Cross multiply
   9,868.52x = 13,618.71 × 5,891.96
4. Step 4: Simplify right side
   9,868.52x = 80,240,826.48
5. Step 5: Solve for x
   x = 80,240,826.48/9,868.52
6. Step 6: Final answer
   x = 8,130.99