Finding the Fourth Proportional to 8,309.39, 12,460.43 and 3,111.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,309.39 : 12,460.43 = 3,111.62 : x
2. Step 2: Convert to fraction form
   8,309.39/12,460.43 = 3,111.62/x
3. Step 3: Cross multiply
   8,309.39x = 12,460.43 × 3,111.62
4. Step 4: Simplify right side
   8,309.39x = 38,772,051.17
5. Step 5: Solve for x
   x = 38,772,051.17/8,309.39
6. Step 6: Final answer
   x = 4,666.06