Finding the Fourth Proportional to 8,071.31, 12,101.79 and 3,136.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,071.31 : 12,101.79 = 3,136.89 : x
2. Step 2: Convert to fraction form
   8,071.31/12,101.79 = 3,136.89/x
3. Step 3: Cross multiply
   8,071.31x = 12,101.79 × 3,136.89
4. Step 4: Simplify right side
   8,071.31x = 37,961,984.03
5. Step 5: Solve for x
   x = 37,961,984.03/8,071.31
6. Step 6: Final answer
   x = 4,703.33