Finding the Fourth Proportional to 10,131.13, 13,980.95 and 5,655.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.13 : 13,980.95 = 5,655.12 : x
2. Step 2: Convert to fraction form
   10,131.13/13,980.95 = 5,655.12/x
3. Step 3: Cross multiply
   10,131.13x = 13,980.95 × 5,655.12
4. Step 4: Simplify right side
   10,131.13x = 79,063,922.28
5. Step 5: Solve for x
   x = 79,063,922.28/10,131.13
6. Step 6: Final answer
   x = 7,804.06