Finding the Fourth Proportional to 7,487.10, 10,331.72 and 4,129.94

Step by Step Solution

1. Step 1: Write the proportion equation
   7,487.10 : 10,331.72 = 4,129.94 : x
2. Step 2: Convert to fraction form
   7,487.10/10,331.72 = 4,129.94/x
3. Step 3: Cross multiply
   7,487.10x = 10,331.72 × 4,129.94
4. Step 4: Simplify right side
   7,487.10x = 42,669,383.70
5. Step 5: Solve for x
   x = 42,669,383.70/7,487.10
6. Step 6: Final answer
   x = 5,699.05