Finding the Fourth Proportional to 12,784.08, 17,637.12 and 7,936.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,784.08 : 17,637.12 = 7,936.53 : x
2. Step 2: Convert to fraction form
   12,784.08/17,637.12 = 7,936.53/x
3. Step 3: Cross multiply
   12,784.08x = 17,637.12 × 7,936.53
4. Step 4: Simplify right side
   12,784.08x = 139,977,404.13
5. Step 5: Solve for x
   x = 139,977,404.13/12,784.08
6. Step 6: Final answer
   x = 10,949.36