Finding the Fourth Proportional to 7,781.99, 10,726.35 and 5,514.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,781.99 : 10,726.35 = 5,514.10 : x
2. Step 2: Convert to fraction form
   7,781.99/10,726.35 = 5,514.10/x
3. Step 3: Cross multiply
   7,781.99x = 10,726.35 × 5,514.10
4. Step 4: Simplify right side
   7,781.99x = 59,146,119.47
5. Step 5: Solve for x
   x = 59,146,119.47/7,781.99
6. Step 6: Final answer
   x = 7,600.38