Finding the Fourth Proportional to 8,307.27, 12,458.46 and 3,111.93

Step by Step Solution

1. Step 1: Write the proportion equation
   8,307.27 : 12,458.46 = 3,111.93 : x
2. Step 2: Convert to fraction form
   8,307.27/12,458.46 = 3,111.93/x
3. Step 3: Cross multiply
   8,307.27x = 12,458.46 × 3,111.93
4. Step 4: Simplify right side
   8,307.27x = 38,769,855.43
5. Step 5: Solve for x
   x = 38,769,855.43/8,307.27
6. Step 6: Final answer
   x = 4,666.98