Finding the Fourth Proportional to 9,026.78, 12,456.09 and 5,047.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,026.78 : 12,456.09 = 5,047.79 : x
2. Step 2: Convert to fraction form
   9,026.78/12,456.09 = 5,047.79/x
3. Step 3: Cross multiply
   9,026.78x = 12,456.09 × 5,047.79
4. Step 4: Simplify right side
   9,026.78x = 62,875,664.26
5. Step 5: Solve for x
   x = 62,875,664.26/9,026.78
6. Step 6: Final answer
   x = 6,965.46