Finding the Fourth Proportional to 23,310.72, 32,152.80 and 13,872

Step by Step Solution

1. Step 1: Write the proportion equation
   23,310.72 : 32,152.80 = 13,872 : x
2. Step 2: Convert to fraction form
   23,310.72/32,152.80 = 13,872/x
3. Step 3: Cross multiply
   23,310.72x = 32,152.80 × 13,872
4. Step 4: Simplify right side
   23,310.72x = 446,023,641.60
5. Step 5: Solve for x
   x = 446,023,641.60/23,310.72
6. Step 6: Final answer
   x = 19,133.84