Finding the Fourth Proportional to 37,581.78, 51,863.69 and 21,448.77

Step by Step Solution

1. Step 1: Write the proportion equation
   37,581.78 : 51,863.69 = 21,448.77 : x
2. Step 2: Convert to fraction form
   37,581.78/51,863.69 = 21,448.77/x
3. Step 3: Cross multiply
   37,581.78x = 51,863.69 × 21,448.77
4. Step 4: Simplify right side
   37,581.78x = 1,112,412,411.78
5. Step 5: Solve for x
   x = 1,112,412,411.78/37,581.78
6. Step 6: Final answer
   x = 29,599.78