Finding the Fourth Proportional to 11,191.16, 16,781.88 and 3,398.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,191.16 : 16,781.88 = 3,398.15 : x
2. Step 2: Convert to fraction form
   11,191.16/16,781.88 = 3,398.15/x
3. Step 3: Cross multiply
   11,191.16x = 16,781.88 × 3,398.15
4. Step 4: Simplify right side
   11,191.16x = 57,027,400.22
5. Step 5: Solve for x
   x = 57,027,400.22/11,191.16
6. Step 6: Final answer
   x = 5,095.75