Finding the Fourth Proportional to 38,910.18, 53,698.77 and 22,143.18

Step by Step Solution

1. Step 1: Write the proportion equation
   38,910.18 : 53,698.77 = 22,143.18 : x
2. Step 2: Convert to fraction form
   38,910.18/53,698.77 = 22,143.18/x
3. Step 3: Cross multiply
   38,910.18x = 53,698.77 × 22,143.18
4. Step 4: Simplify right side
   38,910.18x = 1,189,061,529.89
5. Step 5: Solve for x
   x = 1,189,061,529.89/38,910.18
6. Step 6: Final answer
   x = 30,559.14