Finding the Fourth Proportional to 25,221.33, 34,806.24 and 13,891.05

Step by Step Solution

1. Step 1: Write the proportion equation
   25,221.33 : 34,806.24 = 13,891.05 : x
2. Step 2: Convert to fraction form
   25,221.33/34,806.24 = 13,891.05/x
3. Step 3: Cross multiply
   25,221.33x = 34,806.24 × 13,891.05
4. Step 4: Simplify right side
   25,221.33x = 483,495,220.15
5. Step 5: Solve for x
   x = 483,495,220.15/25,221.33
6. Step 6: Final answer
   x = 19,170.09