Finding the Fourth Proportional to 16,663.78, 24,995.62 and 5,570.47

Step by Step Solution

1. Step 1: Write the proportion equation
   16,663.78 : 24,995.62 = 5,570.47 : x
2. Step 2: Convert to fraction form
   16,663.78/24,995.62 = 5,570.47/x
3. Step 3: Cross multiply
   16,663.78x = 24,995.62 × 5,570.47
4. Step 4: Simplify right side
   16,663.78x = 139,237,351.34
5. Step 5: Solve for x
   x = 139,237,351.34/16,663.78
6. Step 6: Final answer
   x = 8,355.69