Finding the Fourth Proportional to 9,429.98, 13,013.00 and 5,238.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,429.98 : 13,013.00 = 5,238.50 : x
2. Step 2: Convert to fraction form
   9,429.98/13,013.00 = 5,238.50/x
3. Step 3: Cross multiply
   9,429.98x = 13,013.00 × 5,238.50
4. Step 4: Simplify right side
   9,429.98x = 68,168,509.24
5. Step 5: Solve for x
   x = 68,168,509.24/9,429.98
6. Step 6: Final answer
   x = 7,228.92