Finding the Fourth Proportional to 10,274.15, 14,178.32 and 5,558.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,274.15 : 14,178.32 = 5,558.43 : x
2. Step 2: Convert to fraction form
   10,274.15/14,178.32 = 5,558.43/x
3. Step 3: Cross multiply
   10,274.15x = 14,178.32 × 5,558.43
4. Step 4: Simplify right side
   10,274.15x = 78,809,245.46
5. Step 5: Solve for x
   x = 78,809,245.46/10,274.15
6. Step 6: Final answer
   x = 7,670.63