Finding the Fourth Proportional to 7,345.46, 10,139.43 and 5,366.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,345.46 : 10,139.43 = 5,366.18 : x
2. Step 2: Convert to fraction form
   7,345.46/10,139.43 = 5,366.18/x
3. Step 3: Cross multiply
   7,345.46x = 10,139.43 × 5,366.18
4. Step 4: Simplify right side
   7,345.46x = 54,410,006.48
5. Step 5: Solve for x
   x = 54,410,006.48/7,345.46
6. Step 6: Final answer
   x = 7,407.30