Finding the Fourth Proportional to 9,428.52, 13,010.85 and 5,236.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,428.52 : 13,010.85 = 5,236.50 : x
2. Step 2: Convert to fraction form
   9,428.52/13,010.85 = 5,236.50/x
3. Step 3: Cross multiply
   9,428.52x = 13,010.85 × 5,236.50
4. Step 4: Simplify right side
   9,428.52x = 68,131,316.03
5. Step 5: Solve for x
   x = 68,131,316.03/9,428.52
6. Step 6: Final answer
   x = 7,226.09