Finding the Fourth Proportional to 12,013.61, 18,017.51 and 5,346.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,013.61 : 18,017.51 = 5,346.50 : x
2. Step 2: Convert to fraction form
   12,013.61/18,017.51 = 5,346.50/x
3. Step 3: Cross multiply
   12,013.61x = 18,017.51 × 5,346.50
4. Step 4: Simplify right side
   12,013.61x = 96,330,500.39
5. Step 5: Solve for x
   x = 96,330,500.39/12,013.61
6. Step 6: Final answer
   x = 8,018.45