Finding the Fourth Proportional to 39,900.48, 59,836.73 and 21,885.09

Step by Step Solution

1. Step 1: Write the proportion equation
   39,900.48 : 59,836.73 = 21,885.09 : x
2. Step 2: Convert to fraction form
   39,900.48/59,836.73 = 21,885.09/x
3. Step 3: Cross multiply
   39,900.48x = 59,836.73 × 21,885.09
4. Step 4: Simplify right side
   39,900.48x = 1,309,532,111.93
5. Step 5: Solve for x
   x = 1,309,532,111.93/39,900.48
6. Step 6: Final answer
   x = 32,819.96