Finding the Fourth Proportional to 13,074.42, 18,042.62 and 7,486.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,074.42 : 18,042.62 = 7,486.50 : x
2. Step 2: Convert to fraction form
   13,074.42/18,042.62 = 7,486.50/x
3. Step 3: Cross multiply
   13,074.42x = 18,042.62 × 7,486.50
4. Step 4: Simplify right side
   13,074.42x = 135,076,037.20
5. Step 5: Solve for x
   x = 135,076,037.20/13,074.42
6. Step 6: Final answer
   x = 10,331.32