Finding the Fourth Proportional to 10,131.60, 13,981.20 and 5,655.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.60 : 13,981.20 = 5,655.36 : x
2. Step 2: Convert to fraction form
   10,131.60/13,981.20 = 5,655.36/x
3. Step 3: Cross multiply
   10,131.60x = 13,981.20 × 5,655.36
4. Step 4: Simplify right side
   10,131.60x = 79,068,719.23
5. Step 5: Solve for x
   x = 79,068,719.23/10,131.60
6. Step 6: Final answer
   x = 7,804.17