Finding the Fourth Proportional to 28,037.31, 42,062.63 and 8,047.05

Step by Step Solution

1. Step 1: Write the proportion equation
   28,037.31 : 42,062.63 = 8,047.05 : x
2. Step 2: Convert to fraction form
   28,037.31/42,062.63 = 8,047.05/x
3. Step 3: Cross multiply
   28,037.31x = 42,062.63 × 8,047.05
4. Step 4: Simplify right side
   28,037.31x = 338,480,046.51
5. Step 5: Solve for x
   x = 338,480,046.51/28,037.31
6. Step 6: Final answer
   x = 12,072.49