Finding the Fourth Proportional to 10,131.15, 13,981.10 and 5,654.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.15 : 13,981.10 = 5,654.91 : x
2. Step 2: Convert to fraction form
   10,131.15/13,981.10 = 5,654.91/x
3. Step 3: Cross multiply
   10,131.15x = 13,981.10 × 5,654.91
4. Step 4: Simplify right side
   10,131.15x = 79,061,833.93
5. Step 5: Solve for x
   x = 79,061,833.93/10,131.15
6. Step 6: Final answer
   x = 7,803.84