Finding the Fourth Proportional to 52,983.86, 79,475.58 and 13,540.91

Step by Step Solution

1. Step 1: Write the proportion equation
   52,983.86 : 79,475.58 = 13,540.91 : x
2. Step 2: Convert to fraction form
   52,983.86/79,475.58 = 13,540.91/x
3. Step 3: Cross multiply
   52,983.86x = 79,475.58 × 13,540.91
4. Step 4: Simplify right side
   52,983.86x = 1,076,171,278.60
5. Step 5: Solve for x
   x = 1,076,171,278.60/52,983.86
6. Step 6: Final answer
   x = 20,311.31