Finding the Fourth Proportional to 37,896.50, 52,297.17 and 21,129.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,896.50 : 52,297.17 = 21,129.50 : x
2. Step 2: Convert to fraction form
   37,896.50/52,297.17 = 21,129.50/x
3. Step 3: Cross multiply
   37,896.50x = 52,297.17 × 21,129.50
4. Step 4: Simplify right side
   37,896.50x = 1,105,013,053.52
5. Step 5: Solve for x
   x = 1,105,013,053.52/37,896.50
6. Step 6: Final answer
   x = 29,158.71