Finding the Fourth Proportional to 7,347.42, 10,139.31 and 4,203.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,347.42 : 10,139.31 = 4,203.18 : x
2. Step 2: Convert to fraction form
   7,347.42/10,139.31 = 4,203.18/x
3. Step 3: Cross multiply
   7,347.42x = 10,139.31 × 4,203.18
4. Step 4: Simplify right side
   7,347.42x = 42,617,345.01
5. Step 5: Solve for x
   x = 42,617,345.01/7,347.42
6. Step 6: Final answer
   x = 5,800.31