Finding the Fourth Proportional to 21,037.37, 31,552.38 and 5,454.99

Step by Step Solution

1. Step 1: Write the proportion equation
   21,037.37 : 31,552.38 = 5,454.99 : x
2. Step 2: Convert to fraction form
   21,037.37/31,552.38 = 5,454.99/x
3. Step 3: Cross multiply
   21,037.37x = 31,552.38 × 5,454.99
4. Step 4: Simplify right side
   21,037.37x = 172,117,917.38
5. Step 5: Solve for x
   x = 172,117,917.38/21,037.37
6. Step 6: Final answer
   x = 8,181.53