Finding the Fourth Proportional to 52,815.43, 79,223.33 and 13,372.53

Step by Step Solution

1. Step 1: Write the proportion equation
   52,815.43 : 79,223.33 = 13,372.53 : x
2. Step 2: Convert to fraction form
   52,815.43/79,223.33 = 13,372.53/x
3. Step 3: Cross multiply
   52,815.43x = 79,223.33 × 13,372.53
4. Step 4: Simplify right side
   52,815.43x = 1,059,415,894.15
5. Step 5: Solve for x
   x = 1,059,415,894.15/52,815.43
6. Step 6: Final answer
   x = 20,058.83