Finding the Fourth Proportional to 3,612.69, 5,393.00 and 3,342.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,612.69 : 5,393.00 = 3,342.15 : x
2. Step 2: Convert to fraction form
   3,612.69/5,393.00 = 3,342.15/x
3. Step 3: Cross multiply
   3,612.69x = 5,393.00 × 3,342.15
4. Step 4: Simplify right side
   3,612.69x = 18,024,223.31
5. Step 5: Solve for x
   x = 18,024,223.31/3,612.69
6. Step 6: Final answer
   x = 4,989.14