Finding the Fourth Proportional to 39,039.67, 53,874.78 and 21,134.83

Step by Step Solution

1. Step 1: Write the proportion equation
   39,039.67 : 53,874.78 = 21,134.83 : x
2. Step 2: Convert to fraction form
   39,039.67/53,874.78 = 21,134.83/x
3. Step 3: Cross multiply
   39,039.67x = 53,874.78 × 21,134.83
4. Step 4: Simplify right side
   39,039.67x = 1,138,634,316.59
5. Step 5: Solve for x
   x = 1,138,634,316.59/39,039.67
6. Step 6: Final answer
   x = 29,166.08