Finding the Fourth Proportional to 28,223.30, 42,341.98 and 19,919.52

Step by Step Solution

1. Step 1: Write the proportion equation
   28,223.30 : 42,341.98 = 19,919.52 : x
2. Step 2: Convert to fraction form
   28,223.30/42,341.98 = 19,919.52/x
3. Step 3: Cross multiply
   28,223.30x = 42,341.98 × 19,919.52
4. Step 4: Simplify right side
   28,223.30x = 843,431,917.45
5. Step 5: Solve for x
   x = 843,431,917.45/28,223.30
6. Step 6: Final answer
   x = 29,884.24