Finding the Fourth Proportional to 12,118.32, 16,753.95 and 10,641.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,118.32 : 16,753.95 = 10,641.60 : x
2. Step 2: Convert to fraction form
   12,118.32/16,753.95 = 10,641.60/x
3. Step 3: Cross multiply
   12,118.32x = 16,753.95 × 10,641.60
4. Step 4: Simplify right side
   12,118.32x = 178,288,834.32
5. Step 5: Solve for x
   x = 178,288,834.32/12,118.32
6. Step 6: Final answer
   x = 14,712.34