Finding the Fourth Proportional to 9,042.30, 12,478.22 and 5,063.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,042.30 : 12,478.22 = 5,063.40 : x
2. Step 2: Convert to fraction form
   9,042.30/12,478.22 = 5,063.40/x
3. Step 3: Cross multiply
   9,042.30x = 12,478.22 × 5,063.40
4. Step 4: Simplify right side
   9,042.30x = 63,182,219.15
5. Step 5: Solve for x
   x = 63,182,219.15/9,042.30
6. Step 6: Final answer
   x = 6,987.41