Finding the Fourth Proportional to 52,886.68, 79,329.68 and 13,443.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,886.68 : 79,329.68 = 13,443.72 : x
2. Step 2: Convert to fraction form
   52,886.68/79,329.68 = 13,443.72/x
3. Step 3: Cross multiply
   52,886.68x = 79,329.68 × 13,443.72
4. Step 4: Simplify right side
   52,886.68x = 1,066,486,005.61
5. Step 5: Solve for x
   x = 1,066,486,005.61/52,886.68
6. Step 6: Final answer
   x = 20,165.49