Finding the Fourth Proportional to 39,926.76, 55,098.56 and 22,021.89

Step by Step Solution

1. Step 1: Write the proportion equation
   39,926.76 : 55,098.56 = 22,021.89 : x
2. Step 2: Convert to fraction form
   39,926.76/55,098.56 = 22,021.89/x
3. Step 3: Cross multiply
   39,926.76x = 55,098.56 × 22,021.89
4. Step 4: Simplify right side
   39,926.76x = 1,213,374,655.61
5. Step 5: Solve for x
   x = 1,213,374,655.61/39,926.76
6. Step 6: Final answer
   x = 30,390.01