Finding the Fourth Proportional to 10,131.14, 13,980.82 and 5,655.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.14 : 13,980.82 = 5,655.40 : x
2. Step 2: Convert to fraction form
   10,131.14/13,980.82 = 5,655.40/x
3. Step 3: Cross multiply
   10,131.14x = 13,980.82 × 5,655.40
4. Step 4: Simplify right side
   10,131.14x = 79,067,129.43
5. Step 5: Solve for x
   x = 79,067,129.43/10,131.14
6. Step 6: Final answer
   x = 7,804.37