Finding the Fourth Proportional to 14,250.56, 19,665 and 7,961.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,250.56 : 19,665 = 7,961.72 : x
2. Step 2: Convert to fraction form
   14,250.56/19,665 = 7,961.72/x
3. Step 3: Cross multiply
   14,250.56x = 19,665 × 7,961.72
4. Step 4: Simplify right side
   14,250.56x = 156,567,223.80
5. Step 5: Solve for x
   x = 156,567,223.80/14,250.56
6. Step 6: Final answer
   x = 10,986.74