Finding the Fourth Proportional to 15,868.01, 21,896.92 and 8,696.52

Step by Step Solution

1. Step 1: Write the proportion equation
   15,868.01 : 21,896.92 = 8,696.52 : x
2. Step 2: Convert to fraction form
   15,868.01/21,896.92 = 8,696.52/x
3. Step 3: Cross multiply
   15,868.01x = 21,896.92 × 8,696.52
4. Step 4: Simplify right side
   15,868.01x = 190,427,002.72
5. Step 5: Solve for x
   x = 190,427,002.72/15,868.01
6. Step 6: Final answer
   x = 12,000.69