Finding the Fourth Proportional to 13,488.95, 18,610.61 and 7,822.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,488.95 : 18,610.61 = 7,822.54 : x
2. Step 2: Convert to fraction form
   13,488.95/18,610.61 = 7,822.54/x
3. Step 3: Cross multiply
   13,488.95x = 18,610.61 × 7,822.54
4. Step 4: Simplify right side
   13,488.95x = 145,582,269.30
5. Step 5: Solve for x
   x = 145,582,269.30/13,488.95
6. Step 6: Final answer
   x = 10,792.71