Finding the Fourth Proportional to 21,199.42, 31,799.10 and 7,348.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,199.42 : 31,799.10 = 7,348.42 : x
2. Step 2: Convert to fraction form
   21,199.42/31,799.10 = 7,348.42/x
3. Step 3: Cross multiply
   21,199.42x = 31,799.10 × 7,348.42
4. Step 4: Simplify right side
   21,199.42x = 233,673,142.42
5. Step 5: Solve for x
   x = 233,673,142.42/21,199.42
6. Step 6: Final answer
   x = 11,022.62