Finding the Fourth Proportional to 39,076.16, 53,925 and 21,171.62

Step by Step Solution

1. Step 1: Write the proportion equation
   39,076.16 : 53,925 = 21,171.62 : x
2. Step 2: Convert to fraction form
   39,076.16/53,925 = 21,171.62/x
3. Step 3: Cross multiply
   39,076.16x = 53,925 × 21,171.62
4. Step 4: Simplify right side
   39,076.16x = 1,141,679,608.50
5. Step 5: Solve for x
   x = 1,141,679,608.50/39,076.16
6. Step 6: Final answer
   x = 29,216.78