Finding the Fourth Proportional to 10,142.59, 13,995.98 and 5,605.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,142.59 : 13,995.98 = 5,605.08 : x
2. Step 2: Convert to fraction form
   10,142.59/13,995.98 = 5,605.08/x
3. Step 3: Cross multiply
   10,142.59x = 13,995.98 × 5,605.08
4. Step 4: Simplify right side
   10,142.59x = 78,448,580.57
5. Step 5: Solve for x
   x = 78,448,580.57/10,142.59
6. Step 6: Final answer
   x = 7,734.57