Finding the Fourth Proportional to 28,047.47, 42,065.12 and 8,326.19

Step by Step Solution

1. Step 1: Write the proportion equation
   28,047.47 : 42,065.12 = 8,326.19 : x
2. Step 2: Convert to fraction form
   28,047.47/42,065.12 = 8,326.19/x
3. Step 3: Cross multiply
   28,047.47x = 42,065.12 × 8,326.19
4. Step 4: Simplify right side
   28,047.47x = 350,242,307.47
5. Step 5: Solve for x
   x = 350,242,307.47/28,047.47
6. Step 6: Final answer
   x = 12,487.49