Finding the Fourth Proportional to 6,113.20, 8,436.60 and 3,460.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,113.20 : 8,436.60 = 3,460.72 : x
2. Step 2: Convert to fraction form
   6,113.20/8,436.60 = 3,460.72/x
3. Step 3: Cross multiply
   6,113.20x = 8,436.60 × 3,460.72
4. Step 4: Simplify right side
   6,113.20x = 29,196,710.35
5. Step 5: Solve for x
   x = 29,196,710.35/6,113.20
6. Step 6: Final answer
   x = 4,776.01