Finding the Fourth Proportional to 8,191.16, 12,288.56 and 2,347.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,191.16 : 12,288.56 = 2,347.31 : x
2. Step 2: Convert to fraction form
   8,191.16/12,288.56 = 2,347.31/x
3. Step 3: Cross multiply
   8,191.16x = 12,288.56 × 2,347.31
4. Step 4: Simplify right side
   8,191.16x = 28,845,091.96
5. Step 5: Solve for x
   x = 28,845,091.96/8,191.16
6. Step 6: Final answer
   x = 3,521.49