Finding the Fourth Proportional to 11,147.18, 15,383.01 and 6,111.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,147.18 : 15,383.01 = 6,111.31 : x
2. Step 2: Convert to fraction form
   11,147.18/15,383.01 = 6,111.31/x
3. Step 3: Cross multiply
   11,147.18x = 15,383.01 × 6,111.31
4. Step 4: Simplify right side
   11,147.18x = 94,010,342.84
5. Step 5: Solve for x
   x = 94,010,342.84/11,147.18
6. Step 6: Final answer
   x = 8,433.55