Finding the Fourth Proportional to 39,966.72, 59,930.88 and 19,196.16

Step by Step Solution

1. Step 1: Write the proportion equation
   39,966.72 : 59,930.88 = 19,196.16 : x
2. Step 2: Convert to fraction form
   39,966.72/59,930.88 = 19,196.16/x
3. Step 3: Cross multiply
   39,966.72x = 59,930.88 × 19,196.16
4. Step 4: Simplify right side
   39,966.72x = 1,150,442,761.42
5. Step 5: Solve for x
   x = 1,150,442,761.42/39,966.72
6. Step 6: Final answer
   x = 28,785.02