Finding the Fourth Proportional to 13,123.22, 18,110.39 and 7,457.67

Step by Step Solution

1. Step 1: Write the proportion equation
   13,123.22 : 18,110.39 = 7,457.67 : x
2. Step 2: Convert to fraction form
   13,123.22/18,110.39 = 7,457.67/x
3. Step 3: Cross multiply
   13,123.22x = 18,110.39 × 7,457.67
4. Step 4: Simplify right side
   13,123.22x = 135,061,274.90
5. Step 5: Solve for x
   x = 135,061,274.90/13,123.22
6. Step 6: Final answer
   x = 10,291.78