Finding the Fourth Proportional to 9,429.16, 13,011.72 and 5,237.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,429.16 : 13,011.72 = 5,237.32 : x
2. Step 2: Convert to fraction form
   9,429.16/13,011.72 = 5,237.32/x
3. Step 3: Cross multiply
   9,429.16x = 13,011.72 × 5,237.32
4. Step 4: Simplify right side
   9,429.16x = 68,146,541.39
5. Step 5: Solve for x
   x = 68,146,541.39/9,429.16
6. Step 6: Final answer
   x = 7,227.21