Finding the Fourth Proportional to 21,480.53, 29,641.15 and 12,047.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,480.53 : 29,641.15 = 12,047.27 : x
2. Step 2: Convert to fraction form
   21,480.53/29,641.15 = 12,047.27/x
3. Step 3: Cross multiply
   21,480.53x = 29,641.15 × 12,047.27
4. Step 4: Simplify right side
   21,480.53x = 357,094,937.16
5. Step 5: Solve for x
   x = 357,094,937.16/21,480.53
6. Step 6: Final answer
   x = 16,624.12