Finding the Fourth Proportional to 8,980.10, 13,470.18 and 3,136.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,980.10 : 13,470.18 = 3,136.71 : x
2. Step 2: Convert to fraction form
   8,980.10/13,470.18 = 3,136.71/x
3. Step 3: Cross multiply
   8,980.10x = 13,470.18 × 3,136.71
4. Step 4: Simplify right side
   8,980.10x = 42,252,048.31
5. Step 5: Solve for x
   x = 42,252,048.31/8,980.10
6. Step 6: Final answer
   x = 4,705.08