Finding the Fourth Proportional to 28,038.31, 42,064.13 and 8,048.05

Step by Step Solution

1. Step 1: Write the proportion equation
   28,038.31 : 42,064.13 = 8,048.05 : x
2. Step 2: Convert to fraction form
   28,038.31/42,064.13 = 8,048.05/x
3. Step 3: Cross multiply
   28,038.31x = 42,064.13 × 8,048.05
4. Step 4: Simplify right side
   28,038.31x = 338,534,221.45
5. Step 5: Solve for x
   x = 338,534,221.45/28,038.31
6. Step 6: Final answer
   x = 12,073.99