Finding the Fourth Proportional to 13,470.71, 18,589.61 and 7,806.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,470.71 : 18,589.61 = 7,806.56 : x
2. Step 2: Convert to fraction form
   13,470.71/18,589.61 = 7,806.56/x
3. Step 3: Cross multiply
   13,470.71x = 18,589.61 × 7,806.56
4. Step 4: Simplify right side
   13,470.71x = 145,120,773.86
5. Step 5: Solve for x
   x = 145,120,773.86/13,470.71
6. Step 6: Final answer
   x = 10,773.06