Finding the Fourth Proportional to 23,470.76, 32,378.78 and 20,784.71

Step by Step Solution

1. Step 1: Write the proportion equation
   23,470.76 : 32,378.78 = 20,784.71 : x
2. Step 2: Convert to fraction form
   23,470.76/32,378.78 = 20,784.71/x
3. Step 3: Cross multiply
   23,470.76x = 32,378.78 × 20,784.71
4. Step 4: Simplify right side
   23,470.76x = 672,983,685.36
5. Step 5: Solve for x
   x = 672,983,685.36/23,470.76
6. Step 6: Final answer
   x = 28,673.28