Finding the Fourth Proportional to 10,517.66, 14,515.38 and 7,860.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,517.66 : 14,515.38 = 7,860.45 : x
2. Step 2: Convert to fraction form
   10,517.66/14,515.38 = 7,860.45/x
3. Step 3: Cross multiply
   10,517.66x = 14,515.38 × 7,860.45
4. Step 4: Simplify right side
   10,517.66x = 114,097,418.72
5. Step 5: Solve for x
   x = 114,097,418.72/10,517.66
6. Step 6: Final answer
   x = 10,848.18