Finding the Fourth Proportional to 9,922.88, 14,888.06 and 5,242.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,922.88 : 14,888.06 = 5,242.70 : x
2. Step 2: Convert to fraction form
   9,922.88/14,888.06 = 5,242.70/x
3. Step 3: Cross multiply
   9,922.88x = 14,888.06 × 5,242.70
4. Step 4: Simplify right side
   9,922.88x = 78,053,632.16
5. Step 5: Solve for x
   x = 78,053,632.16/9,922.88
6. Step 6: Final answer
   x = 7,866.03