Finding the Fourth Proportional to 7,418.88, 10,238.18 and 5,061.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,418.88 : 10,238.18 = 5,061.78 : x
2. Step 2: Convert to fraction form
   7,418.88/10,238.18 = 5,061.78/x
3. Step 3: Cross multiply
   7,418.88x = 10,238.18 × 5,061.78
4. Step 4: Simplify right side
   7,418.88x = 51,823,389.45
5. Step 5: Solve for x
   x = 51,823,389.45/7,418.88
6. Step 6: Final answer
   x = 6,985.34