Finding the Fourth Proportional to 19,863.31, 29,805.91 and 12,077.59

Step by Step Solution

1. Step 1: Write the proportion equation
   19,863.31 : 29,805.91 = 12,077.59 : x
2. Step 2: Convert to fraction form
   19,863.31/29,805.91 = 12,077.59/x
3. Step 3: Cross multiply
   19,863.31x = 29,805.91 × 12,077.59
4. Step 4: Simplify right side
   19,863.31x = 359,983,560.56
5. Step 5: Solve for x
   x = 359,983,560.56/19,863.31
6. Step 6: Final answer
   x = 18,123.04