Finding the Fourth Proportional to 39,196.71, 54,091.40 and 21,292.07

Step by Step Solution

1. Step 1: Write the proportion equation
   39,196.71 : 54,091.40 = 21,292.07 : x
2. Step 2: Convert to fraction form
   39,196.71/54,091.40 = 21,292.07/x
3. Step 3: Cross multiply
   39,196.71x = 54,091.40 × 21,292.07
4. Step 4: Simplify right side
   39,196.71x = 1,151,717,498.28
5. Step 5: Solve for x
   x = 1,151,717,498.28/39,196.71
6. Step 6: Final answer
   x = 29,383.01