Finding the Fourth Proportional to 10,179.78, 14,048.10 and 5,703.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,179.78 : 14,048.10 = 5,703.55 : x
2. Step 2: Convert to fraction form
   10,179.78/14,048.10 = 5,703.55/x
3. Step 3: Cross multiply
   10,179.78x = 14,048.10 × 5,703.55
4. Step 4: Simplify right side
   10,179.78x = 80,124,005.63
5. Step 5: Solve for x
   x = 80,124,005.63/10,179.78
6. Step 6: Final answer
   x = 7,870.90