Finding the Fourth Proportional to 22,458.47, 33,690.78 and 7,663.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,458.47 : 33,690.78 = 7,663.42 : x
2. Step 2: Convert to fraction form
   22,458.47/33,690.78 = 7,663.42/x
3. Step 3: Cross multiply
   22,458.47x = 33,690.78 × 7,663.42
4. Step 4: Simplify right side
   22,458.47x = 258,186,597.27
5. Step 5: Solve for x
   x = 258,186,597.27/22,458.47
6. Step 6: Final answer
   x = 11,496.18