Finding the Fourth Proportional to 21,380.88, 32,059.86 and 10,705.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,380.88 : 32,059.86 = 10,705.56 : x
2. Step 2: Convert to fraction form
   21,380.88/32,059.86 = 10,705.56/x
3. Step 3: Cross multiply
   21,380.88x = 32,059.86 × 10,705.56
4. Step 4: Simplify right side
   21,380.88x = 343,218,754.82
5. Step 5: Solve for x
   x = 343,218,754.82/21,380.88
6. Step 6: Final answer
   x = 16,052.60