Finding the Fourth Proportional to 21,385.59, 32,071.08 and 10,851.55

Step by Step Solution

1. Step 1: Write the proportion equation
   21,385.59 : 32,071.08 = 10,851.55 : x
2. Step 2: Convert to fraction form
   21,385.59/32,071.08 = 10,851.55/x
3. Step 3: Cross multiply
   21,385.59x = 32,071.08 × 10,851.55
4. Step 4: Simplify right side
   21,385.59x = 348,020,928.17
5. Step 5: Solve for x
   x = 348,020,928.17/21,385.59
6. Step 6: Final answer
   x = 16,273.62