Finding the Fourth Proportional to 12,997.08, 19,495.43 and 3,136.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,997.08 : 19,495.43 = 3,136.27 : x
2. Step 2: Convert to fraction form
   12,997.08/19,495.43 = 3,136.27/x
3. Step 3: Cross multiply
   12,997.08x = 19,495.43 × 3,136.27
4. Step 4: Simplify right side
   12,997.08x = 61,142,932.25
5. Step 5: Solve for x
   x = 61,142,932.25/12,997.08
6. Step 6: Final answer
   x = 4,704.36