Finding the Fourth Proportional to 8,685.78, 13,030.29 and 2,842.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,685.78 : 13,030.29 = 2,842.71 : x
2. Step 2: Convert to fraction form
   8,685.78/13,030.29 = 2,842.71/x
3. Step 3: Cross multiply
   8,685.78x = 13,030.29 × 2,842.71
4. Step 4: Simplify right side
   8,685.78x = 37,041,335.69
5. Step 5: Solve for x
   x = 37,041,335.69/8,685.78
6. Step 6: Final answer
   x = 4,264.60