Finding the Fourth Proportional to 10,275.54, 14,180.31 and 5,559.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,275.54 : 14,180.31 = 5,559.81 : x
2. Step 2: Convert to fraction form
   10,275.54/14,180.31 = 5,559.81/x
3. Step 3: Cross multiply
   10,275.54x = 14,180.31 × 5,559.81
4. Step 4: Simplify right side
   10,275.54x = 78,839,829.34
5. Step 5: Solve for x
   x = 78,839,829.34/10,275.54
6. Step 6: Final answer
   x = 7,672.57