Finding the Fourth Proportional to 15,847.55, 21,868.89 and 9,134.37

Step by Step Solution

1. Step 1: Write the proportion equation
   15,847.55 : 21,868.89 = 9,134.37 : x
2. Step 2: Convert to fraction form
   15,847.55/21,868.89 = 9,134.37/x
3. Step 3: Cross multiply
   15,847.55x = 21,868.89 × 9,134.37
4. Step 4: Simplify right side
   15,847.55x = 199,758,498.50
5. Step 5: Solve for x
   x = 199,758,498.50/15,847.55
6. Step 6: Final answer
   x = 12,605.01