Finding the Fourth Proportional to 12,622.94, 18,910.16 and 7,059.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,622.94 : 18,910.16 = 7,059.45 : x
2. Step 2: Convert to fraction form
   12,622.94/18,910.16 = 7,059.45/x
3. Step 3: Cross multiply
   12,622.94x = 18,910.16 × 7,059.45
4. Step 4: Simplify right side
   12,622.94x = 133,495,391.10
5. Step 5: Solve for x
   x = 133,495,391.10/12,622.94
6. Step 6: Final answer
   x = 10,575.62