Finding the Fourth Proportional to 10,275.72, 14,180.50 and 5,559.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,275.72 : 14,180.50 = 5,559.99 : x
2. Step 2: Convert to fraction form
   10,275.72/14,180.50 = 5,559.99/x
3. Step 3: Cross multiply
   10,275.72x = 14,180.50 × 5,559.99
4. Step 4: Simplify right side
   10,275.72x = 78,843,438.20
5. Step 5: Solve for x
   x = 78,843,438.20/10,275.72
6. Step 6: Final answer
   x = 7,672.79