Finding the Fourth Proportional to 5,388.86, 7,436.52 and 2,998.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,388.86 : 7,436.52 = 2,998.80 : x
2. Step 2: Convert to fraction form
   5,388.86/7,436.52 = 2,998.80/x
3. Step 3: Cross multiply
   5,388.86x = 7,436.52 × 2,998.80
4. Step 4: Simplify right side
   5,388.86x = 22,300,636.18
5. Step 5: Solve for x
   x = 22,300,636.18/5,388.86
6. Step 6: Final answer
   x = 4,138.28