Finding the Fourth Proportional to 5,178.58, 7,770.62 and 3,953.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,178.58 : 7,770.62 = 3,953.86 : x
2. Step 2: Convert to fraction form
   5,178.58/7,770.62 = 3,953.86/x
3. Step 3: Cross multiply
   5,178.58x = 7,770.62 × 3,953.86
4. Step 4: Simplify right side
   5,178.58x = 30,723,943.59
5. Step 5: Solve for x
   x = 30,723,943.59/5,178.58
6. Step 6: Final answer
   x = 5,932.89