Finding the Fourth Proportional to 9,222.30, 12,726.74 and 5,030.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,222.30 : 12,726.74 = 5,030.55 : x
2. Step 2: Convert to fraction form
   9,222.30/12,726.74 = 5,030.55/x
3. Step 3: Cross multiply
   9,222.30x = 12,726.74 × 5,030.55
4. Step 4: Simplify right side
   9,222.30x = 64,022,476.75
5. Step 5: Solve for x
   x = 64,022,476.75/9,222.30
6. Step 6: Final answer
   x = 6,942.14