Finding the Fourth Proportional to 7,337.16, 10,991.16 and 3,429.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,337.16 : 10,991.16 = 3,429.72 : x
2. Step 2: Convert to fraction form
   7,337.16/10,991.16 = 3,429.72/x
3. Step 3: Cross multiply
   7,337.16x = 10,991.16 × 3,429.72
4. Step 4: Simplify right side
   7,337.16x = 37,696,601.28
5. Step 5: Solve for x
   x = 37,696,601.28/7,337.16
6. Step 6: Final answer
   x = 5,137.76