Finding the Fourth Proportional to 10,274.06, 14,178.31 and 5,558.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,274.06 : 14,178.31 = 5,558.45 : x
2. Step 2: Convert to fraction form
   10,274.06/14,178.31 = 5,558.45/x
3. Step 3: Cross multiply
   10,274.06x = 14,178.31 × 5,558.45
4. Step 4: Simplify right side
   10,274.06x = 78,809,342.43
5. Step 5: Solve for x
   x = 78,809,342.43/10,274.06
6. Step 6: Final answer
   x = 7,670.71