Finding the Fourth Proportional to 25,026.78, 34,536.50 and 13,696.05

Step by Step Solution

1. Step 1: Write the proportion equation
   25,026.78 : 34,536.50 = 13,696.05 : x
2. Step 2: Convert to fraction form
   25,026.78/34,536.50 = 13,696.05/x
3. Step 3: Cross multiply
   25,026.78x = 34,536.50 × 13,696.05
4. Step 4: Simplify right side
   25,026.78x = 473,013,519.17
5. Step 5: Solve for x
   x = 473,013,519.17/25,026.78
6. Step 6: Final answer
   x = 18,900.29