Finding the Fourth Proportional to 10,118.85, 13,948.79 and 7,876.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,118.85 : 13,948.79 = 7,876.77 : x
2. Step 2: Convert to fraction form
   10,118.85/13,948.79 = 7,876.77/x
3. Step 3: Cross multiply
   10,118.85x = 13,948.79 × 7,876.77
4. Step 4: Simplify right side
   10,118.85x = 109,871,371.22
5. Step 5: Solve for x
   x = 109,871,371.22/10,118.85
6. Step 6: Final answer
   x = 10,858.09