Finding the Fourth Proportional to 52,832.82, 79,249.54 and 13,390.05

Step by Step Solution

1. Step 1: Write the proportion equation
   52,832.82 : 79,249.54 = 13,390.05 : x
2. Step 2: Convert to fraction form
   52,832.82/79,249.54 = 13,390.05/x
3. Step 3: Cross multiply
   52,832.82x = 79,249.54 × 13,390.05
4. Step 4: Simplify right side
   52,832.82x = 1,061,155,303.08
5. Step 5: Solve for x
   x = 1,061,155,303.08/52,832.82
6. Step 6: Final answer
   x = 20,085.15