Finding the Fourth Proportional to 28,048.34, 42,079.37 and 8,326.91

Step by Step Solution

1. Step 1: Write the proportion equation
   28,048.34 : 42,079.37 = 8,326.91 : x
2. Step 2: Convert to fraction form
   28,048.34/42,079.37 = 8,326.91/x
3. Step 3: Cross multiply
   28,048.34x = 42,079.37 × 8,326.91
4. Step 4: Simplify right side
   28,048.34x = 350,390,874.82
5. Step 5: Solve for x
   x = 350,390,874.82/28,048.34
6. Step 6: Final answer
   x = 12,492.39