Finding the Fourth Proportional to 8,886.72, 13,337.76 and 3,418.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,886.72 : 13,337.76 = 3,418.56 : x
2. Step 2: Convert to fraction form
   8,886.72/13,337.76 = 3,418.56/x
3. Step 3: Cross multiply
   8,886.72x = 13,337.76 × 3,418.56
4. Step 4: Simplify right side
   8,886.72x = 45,595,932.83
5. Step 5: Solve for x
   x = 45,595,932.83/8,886.72
6. Step 6: Final answer
   x = 5,130.79