Finding the Fourth Proportional to 10,470.53, 15,677.82 and 8,809.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,470.53 : 15,677.82 = 8,809.76 : x
2. Step 2: Convert to fraction form
   10,470.53/15,677.82 = 8,809.76/x
3. Step 3: Cross multiply
   10,470.53x = 15,677.82 × 8,809.76
4. Step 4: Simplify right side
   10,470.53x = 138,117,870.72
5. Step 5: Solve for x
   x = 138,117,870.72/10,470.53
6. Step 6: Final answer
   x = 13,191.10