Finding the Fourth Proportional to 10,147.50, 14,003.58 and 5,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,147.50 : 14,003.58 = 5,731.50 : x
2. Step 2: Convert to fraction form
   10,147.50/14,003.58 = 5,731.50/x
3. Step 3: Cross multiply
   10,147.50x = 14,003.58 × 5,731.50
4. Step 4: Simplify right side
   10,147.50x = 80,261,518.77
5. Step 5: Solve for x
   x = 80,261,518.77/10,147.50
6. Step 6: Final answer
   x = 7,909.49