Finding the Fourth Proportional to 11,290.48, 15,564.54 and 7,922.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,290.48 : 15,564.54 = 7,922.86 : x
2. Step 2: Convert to fraction form
   11,290.48/15,564.54 = 7,922.86/x
3. Step 3: Cross multiply
   11,290.48x = 15,564.54 × 7,922.86
4. Step 4: Simplify right side
   11,290.48x = 123,315,671.38
5. Step 5: Solve for x
   x = 123,315,671.38/11,290.48
6. Step 6: Final answer
   x = 10,922.09