Finding the Fourth Proportional to 16,981.95, 25,465.29 and 5,131.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,981.95 : 25,465.29 = 5,131.15 : x
2. Step 2: Convert to fraction form
   16,981.95/25,465.29 = 5,131.15/x
3. Step 3: Cross multiply
   16,981.95x = 25,465.29 × 5,131.15
4. Step 4: Simplify right side
   16,981.95x = 130,666,139.88
5. Step 5: Solve for x
   x = 130,666,139.88/16,981.95
6. Step 6: Final answer
   x = 7,694.41