Finding the Fourth Proportional to 9,429.88, 13,013.63 and 5,238.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,429.88 : 13,013.63 = 5,238.13 : x
2. Step 2: Convert to fraction form
   9,429.88/13,013.63 = 5,238.13/x
3. Step 3: Cross multiply
   9,429.88x = 13,013.63 × 5,238.13
4. Step 4: Simplify right side
   9,429.88x = 68,167,085.71
5. Step 5: Solve for x
   x = 68,167,085.71/9,429.88
6. Step 6: Final answer
   x = 7,228.84