Finding the Fourth Proportional to 8,967.30, 13,448.55 and 3,123.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,967.30 : 13,448.55 = 3,123.30 : x
2. Step 2: Convert to fraction form
   8,967.30/13,448.55 = 3,123.30/x
3. Step 3: Cross multiply
   8,967.30x = 13,448.55 × 3,123.30
4. Step 4: Simplify right side
   8,967.30x = 42,003,856.22
5. Step 5: Solve for x
   x = 42,003,856.22/8,967.30
6. Step 6: Final answer
   x = 4,684.11