Finding the Fourth Proportional to 3,398.31, 5,089.93 and 2,612.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,398.31 : 5,089.93 = 2,612.53 : x
2. Step 2: Convert to fraction form
   3,398.31/5,089.93 = 2,612.53/x
3. Step 3: Cross multiply
   3,398.31x = 5,089.93 × 2,612.53
4. Step 4: Simplify right side
   3,398.31x = 13,297,594.82
5. Step 5: Solve for x
   x = 13,297,594.82/3,398.31
6. Step 6: Final answer
   x = 3,913.00