Finding the Fourth Proportional to 13,456.33, 18,569.45 and 7,487.64

Step by Step Solution

1. Step 1: Write the proportion equation
   13,456.33 : 18,569.45 = 7,487.64 : x
2. Step 2: Convert to fraction form
   13,456.33/18,569.45 = 7,487.64/x
3. Step 3: Cross multiply
   13,456.33x = 18,569.45 × 7,487.64
4. Step 4: Simplify right side
   13,456.33x = 139,041,375.32
5. Step 5: Solve for x
   x = 139,041,375.32/13,456.33
6. Step 6: Final answer
   x = 10,332.79