Finding the Fourth Proportional to 13,074.21, 18,041.88 and 7,105.74

Step by Step Solution

1. Step 1: Write the proportion equation
   13,074.21 : 18,041.88 = 7,105.74 : x
2. Step 2: Convert to fraction form
   13,074.21/18,041.88 = 7,105.74/x
3. Step 3: Cross multiply
   13,074.21x = 18,041.88 × 7,105.74
4. Step 4: Simplify right side
   13,074.21x = 128,200,908.39
5. Step 5: Solve for x
   x = 128,200,908.39/13,074.21
6. Step 6: Final answer
   x = 9,805.63