Finding the Fourth Proportional to 8,980.12, 13,476.33 and 3,136.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,980.12 : 13,476.33 = 3,136.72 : x
2. Step 2: Convert to fraction form
   8,980.12/13,476.33 = 3,136.72/x
3. Step 3: Cross multiply
   8,980.12x = 13,476.33 × 3,136.72
4. Step 4: Simplify right side
   8,980.12x = 42,271,473.84
5. Step 5: Solve for x
   x = 42,271,473.84/8,980.12
6. Step 6: Final answer
   x = 4,707.23