Finding the Fourth Proportional to 17,131.91, 25,710.84 and 7,278.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,131.91 : 25,710.84 = 7,278.10 : x
2. Step 2: Convert to fraction form
   17,131.91/25,710.84 = 7,278.10/x
3. Step 3: Cross multiply
   17,131.91x = 25,710.84 × 7,278.10
4. Step 4: Simplify right side
   17,131.91x = 187,126,000.33
5. Step 5: Solve for x
   x = 187,126,000.33/17,131.91
6. Step 6: Final answer
   x = 10,922.66