Finding the Fourth Proportional to 10,131.45, 13,981.67 and 5,655.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.45 : 13,981.67 = 5,655.18 : x
2. Step 2: Convert to fraction form
   10,131.45/13,981.67 = 5,655.18/x
3. Step 3: Cross multiply
   10,131.45x = 13,981.67 × 5,655.18
4. Step 4: Simplify right side
   10,131.45x = 79,068,832.27
5. Step 5: Solve for x
   x = 79,068,832.27/10,131.45
6. Step 6: Final answer
   x = 7,804.30