Finding the Fourth Proportional to 21,856.32, 32,790.60 and 10,766.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,856.32 : 32,790.60 = 10,766.34 : x
2. Step 2: Convert to fraction form
   21,856.32/32,790.60 = 10,766.34/x
3. Step 3: Cross multiply
   21,856.32x = 32,790.60 × 10,766.34
4. Step 4: Simplify right side
   21,856.32x = 353,034,748.40
5. Step 5: Solve for x
   x = 353,034,748.40/21,856.32
6. Step 6: Final answer
   x = 16,152.52