Finding the Fourth Proportional to 10,039.70, 13,854.89 and 5,563.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,039.70 : 13,854.89 = 5,563.55 : x
2. Step 2: Convert to fraction form
   10,039.70/13,854.89 = 5,563.55/x
3. Step 3: Cross multiply
   10,039.70x = 13,854.89 × 5,563.55
4. Step 4: Simplify right side
   10,039.70x = 77,082,276.17
5. Step 5: Solve for x
   x = 77,082,276.17/10,039.70
6. Step 6: Final answer
   x = 7,677.75