Finding the Fourth Proportional to 21,470.76, 32,215.38 and 10,385.73

Step by Step Solution

1. Step 1: Write the proportion equation
   21,470.76 : 32,215.38 = 10,385.73 : x
2. Step 2: Convert to fraction form
   21,470.76/32,215.38 = 10,385.73/x
3. Step 3: Cross multiply
   21,470.76x = 32,215.38 × 10,385.73
4. Step 4: Simplify right side
   21,470.76x = 334,580,238.53
5. Step 5: Solve for x
   x = 334,580,238.53/21,470.76
6. Step 6: Final answer
   x = 15,583.06