Finding the Fourth Proportional to 8,740.66, 12,060.50 and 5,105.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,740.66 : 12,060.50 = 5,105.12 : x
2. Step 2: Convert to fraction form
   8,740.66/12,060.50 = 5,105.12/x
3. Step 3: Cross multiply
   8,740.66x = 12,060.50 × 5,105.12
4. Step 4: Simplify right side
   8,740.66x = 61,570,299.76
5. Step 5: Solve for x
   x = 61,570,299.76/8,740.66
6. Step 6: Final answer
   x = 7,044.12