Finding the Fourth Proportional to 8,062.40, 12,091.56 and 3,129.35

Step by Step Solution

1. Step 1: Write the proportion equation
   8,062.40 : 12,091.56 = 3,129.35 : x
2. Step 2: Convert to fraction form
   8,062.40/12,091.56 = 3,129.35/x
3. Step 3: Cross multiply
   8,062.40x = 12,091.56 × 3,129.35
4. Step 4: Simplify right side
   8,062.40x = 37,838,741.78
5. Step 5: Solve for x
   x = 37,838,741.78/8,062.40
6. Step 6: Final answer
   x = 4,693.23