Finding the Fourth Proportional to 15,426.27, 23,081.99 and 13,543.25

Step by Step Solution

1. Step 1: Write the proportion equation
   15,426.27 : 23,081.99 = 13,543.25 : x
2. Step 2: Convert to fraction form
   15,426.27/23,081.99 = 13,543.25/x
3. Step 3: Cross multiply
   15,426.27x = 23,081.99 × 13,543.25
4. Step 4: Simplify right side
   15,426.27x = 312,604,977.94
5. Step 5: Solve for x
   x = 312,604,977.94/15,426.27
6. Step 6: Final answer
   x = 20,264.46