Finding the Fourth Proportional to 7,428.83, 10,251.85 and 4,071.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,428.83 : 10,251.85 = 4,071.72 : x
2. Step 2: Convert to fraction form
   7,428.83/10,251.85 = 4,071.72/x
3. Step 3: Cross multiply
   7,428.83x = 10,251.85 × 4,071.72
4. Step 4: Simplify right side
   7,428.83x = 41,742,640.91
5. Step 5: Solve for x
   x = 41,742,640.91/7,428.83
6. Step 6: Final answer
   x = 5,619.01