Finding the Fourth Proportional to 12,415.10, 18,622.86 and 3,055.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,415.10 : 18,622.86 = 3,055.15 : x
2. Step 2: Convert to fraction form
   12,415.10/18,622.86 = 3,055.15/x
3. Step 3: Cross multiply
   12,415.10x = 18,622.86 × 3,055.15
4. Step 4: Simplify right side
   12,415.10x = 56,895,522.34
5. Step 5: Solve for x
   x = 56,895,522.34/12,415.10
6. Step 6: Final answer
   x = 4,582.77