Finding the Fourth Proportional to 28,004.52, 42,013.86 and 8,283

Step by Step Solution

1. Step 1: Write the proportion equation
   28,004.52 : 42,013.86 = 8,283 : x
2. Step 2: Convert to fraction form
   28,004.52/42,013.86 = 8,283/x
3. Step 3: Cross multiply
   28,004.52x = 42,013.86 × 8,283
4. Step 4: Simplify right side
   28,004.52x = 348,000,802.38
5. Step 5: Solve for x
   x = 348,000,802.38/28,004.52
6. Step 6: Final answer
   x = 12,426.59