Finding the Fourth Proportional to 10,274.77, 14,179.28 and 5,559.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,274.77 : 14,179.28 = 5,559.15 : x
2. Step 2: Convert to fraction form
   10,274.77/14,179.28 = 5,559.15/x
3. Step 3: Cross multiply
   10,274.77x = 14,179.28 × 5,559.15
4. Step 4: Simplify right side
   10,274.77x = 78,824,705.67
5. Step 5: Solve for x
   x = 78,824,705.67/10,274.77
6. Step 6: Final answer
   x = 7,671.68