Finding the Fourth Proportional to 38,128.88, 52,605.83 and 21,994.02

Step by Step Solution

1. Step 1: Write the proportion equation
   38,128.88 : 52,605.83 = 21,994.02 : x
2. Step 2: Convert to fraction form
   38,128.88/52,605.83 = 21,994.02/x
3. Step 3: Cross multiply
   38,128.88x = 52,605.83 × 21,994.02
4. Step 4: Simplify right side
   38,128.88x = 1,157,013,859.59
5. Step 5: Solve for x
   x = 1,157,013,859.59/38,128.88
6. Step 6: Final answer
   x = 30,344.81