Finding the Fourth Proportional to 12,681.31, 19,023.06 and 3,321.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,681.31 : 19,023.06 = 3,321.29 : x
2. Step 2: Convert to fraction form
   12,681.31/19,023.06 = 3,321.29/x
3. Step 3: Cross multiply
   12,681.31x = 19,023.06 × 3,321.29
4. Step 4: Simplify right side
   12,681.31x = 63,181,098.95
5. Step 5: Solve for x
   x = 63,181,098.95/12,681.31
6. Step 6: Final answer
   x = 4,982.22