Finding the Fourth Proportional to 7,274.18, 10,042.17 and 5,677.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,274.18 : 10,042.17 = 5,677.40 : x
2. Step 2: Convert to fraction form
   7,274.18/10,042.17 = 5,677.40/x
3. Step 3: Cross multiply
   7,274.18x = 10,042.17 × 5,677.40
4. Step 4: Simplify right side
   7,274.18x = 57,013,415.96
5. Step 5: Solve for x
   x = 57,013,415.96/7,274.18
6. Step 6: Final answer
   x = 7,837.78