Finding the Fourth Proportional to 52,799.77, 79,199.77 and 12,818.61

Step by Step Solution

1. Step 1: Write the proportion equation
   52,799.77 : 79,199.77 = 12,818.61 : x
2. Step 2: Convert to fraction form
   52,799.77/79,199.77 = 12,818.61/x
3. Step 3: Cross multiply
   52,799.77x = 79,199.77 × 12,818.61
4. Step 4: Simplify right side
   52,799.77x = 1,015,230,567.72
5. Step 5: Solve for x
   x = 1,015,230,567.72/52,799.77
6. Step 6: Final answer
   x = 19,227.94