Finding the Fourth Proportional to 10,131.75, 13,981.55 and 5,655.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.75 : 13,981.55 = 5,655.38 : x
2. Step 2: Convert to fraction form
   10,131.75/13,981.55 = 5,655.38/x
3. Step 3: Cross multiply
   10,131.75x = 13,981.55 × 5,655.38
4. Step 4: Simplify right side
   10,131.75x = 79,070,880.05
5. Step 5: Solve for x
   x = 79,070,880.05/10,131.75
6. Step 6: Final answer
   x = 7,804.27