Finding the Fourth Proportional to 12,100.35, 18,146.19 and 4,307.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,100.35 : 18,146.19 = 4,307.61 : x
2. Step 2: Convert to fraction form
   12,100.35/18,146.19 = 4,307.61/x
3. Step 3: Cross multiply
   12,100.35x = 18,146.19 × 4,307.61
4. Step 4: Simplify right side
   12,100.35x = 78,166,709.51
5. Step 5: Solve for x
   x = 78,166,709.51/12,100.35
6. Step 6: Final answer
   x = 6,459.87