Finding the Fourth Proportional to 7,429.50, 11,145.18 and 2,748.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,429.50 : 11,145.18 = 2,748.72 : x
2. Step 2: Convert to fraction form
   7,429.50/11,145.18 = 2,748.72/x
3. Step 3: Cross multiply
   7,429.50x = 11,145.18 × 2,748.72
4. Step 4: Simplify right side
   7,429.50x = 30,634,979.17
5. Step 5: Solve for x
   x = 30,634,979.17/7,429.50
6. Step 6: Final answer
   x = 4,123.42