Finding the Fourth Proportional to 8,111.50, 12,184.53 and 7,637.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.50 : 12,184.53 = 7,637.49 : x
2. Step 2: Convert to fraction form
   8,111.50/12,184.53 = 7,637.49/x
3. Step 3: Cross multiply
   8,111.50x = 12,184.53 × 7,637.49
4. Step 4: Simplify right side
   8,111.50x = 93,059,226.03
5. Step 5: Solve for x
   x = 93,059,226.03/8,111.50
6. Step 6: Final answer
   x = 11,472.51