Finding the Fourth Proportional to 7,486.72, 10,331.72 and 4,129.62

Step by Step Solution

1. Step 1: Write the proportion equation
   7,486.72 : 10,331.72 = 4,129.62 : x
2. Step 2: Convert to fraction form
   7,486.72/10,331.72 = 4,129.62/x
3. Step 3: Cross multiply
   7,486.72x = 10,331.72 × 4,129.62
4. Step 4: Simplify right side
   7,486.72x = 42,666,077.55
5. Step 5: Solve for x
   x = 42,666,077.55/7,486.72
6. Step 6: Final answer
   x = 5,698.90