Finding the Fourth Proportional to 10,274.04, 14,178.15 and 5,558.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,274.04 : 14,178.15 = 5,558.40 : x
2. Step 2: Convert to fraction form
   10,274.04/14,178.15 = 5,558.40/x
3. Step 3: Cross multiply
   10,274.04x = 14,178.15 × 5,558.40
4. Step 4: Simplify right side
   10,274.04x = 78,807,828.96
5. Step 5: Solve for x
   x = 78,807,828.96/10,274.04
6. Step 6: Final answer
   x = 7,670.58