Finding the Fourth Proportional to 10,131.56, 13,981.70 and 5,939.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.56 : 13,981.70 = 5,939.88 : x
2. Step 2: Convert to fraction form
   10,131.56/13,981.70 = 5,939.88/x
3. Step 3: Cross multiply
   10,131.56x = 13,981.70 × 5,939.88
4. Step 4: Simplify right side
   10,131.56x = 83,049,620.20
5. Step 5: Solve for x
   x = 83,049,620.20/10,131.56
6. Step 6: Final answer
   x = 8,197.12