Finding the Fourth Proportional to 8,980.24, 13,472.52 and 3,136.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,980.24 : 13,472.52 = 3,136.72 : x
2. Step 2: Convert to fraction form
   8,980.24/13,472.52 = 3,136.72/x
3. Step 3: Cross multiply
   8,980.24x = 13,472.52 × 3,136.72
4. Step 4: Simplify right side
   8,980.24x = 42,259,522.93
5. Step 5: Solve for x
   x = 42,259,522.93/8,980.24
6. Step 6: Final answer
   x = 4,705.83