Finding the Fourth Proportional to 39,074.01, 53,922.06 and 21,169.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,074.01 : 53,922.06 = 21,169.50 : x
2. Step 2: Convert to fraction form
   39,074.01/53,922.06 = 21,169.50/x
3. Step 3: Cross multiply
   39,074.01x = 53,922.06 × 21,169.50
4. Step 4: Simplify right side
   39,074.01x = 1,141,503,049.17
5. Step 5: Solve for x
   x = 1,141,503,049.17/39,074.01
6. Step 6: Final answer
   x = 29,213.87