Finding the Fourth Proportional to 12,200.07, 18,298.49 and 3,435.67

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200.07 : 18,298.49 = 3,435.67 : x
2. Step 2: Convert to fraction form
   12,200.07/18,298.49 = 3,435.67/x
3. Step 3: Cross multiply
   12,200.07x = 18,298.49 × 3,435.67
4. Step 4: Simplify right side
   12,200.07x = 62,867,598.16
5. Step 5: Solve for x
   x = 62,867,598.16/12,200.07
6. Step 6: Final answer
   x = 5,153.05