Finding the Fourth Proportional to 39,196.38, 54,091.98 and 21,291.38

Step by Step Solution

1. Step 1: Write the proportion equation
   39,196.38 : 54,091.98 = 21,291.38 : x
2. Step 2: Convert to fraction form
   39,196.38/54,091.98 = 21,291.38/x
3. Step 3: Cross multiply
   39,196.38x = 54,091.98 × 21,291.38
4. Step 4: Simplify right side
   39,196.38x = 1,151,692,901.13
5. Step 5: Solve for x
   x = 1,151,692,901.13/39,196.38
6. Step 6: Final answer
   x = 29,382.63