Finding the Fourth Proportional to 10,439.04, 15,663.63 and 5,174.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,439.04 : 15,663.63 = 5,174.52 : x
2. Step 2: Convert to fraction form
   10,439.04/15,663.63 = 5,174.52/x
3. Step 3: Cross multiply
   10,439.04x = 15,663.63 × 5,174.52
4. Step 4: Simplify right side
   10,439.04x = 81,051,766.71
5. Step 5: Solve for x
   x = 81,051,766.71/10,439.04
6. Step 6: Final answer
   x = 7,764.29