Finding the Fourth Proportional to 37,240.76, 51,379.41 and 21,105.77

Step by Step Solution

1. Step 1: Write the proportion equation
   37,240.76 : 51,379.41 = 21,105.77 : x
2. Step 2: Convert to fraction form
   37,240.76/51,379.41 = 21,105.77/x
3. Step 3: Cross multiply
   37,240.76x = 51,379.41 × 21,105.77
4. Step 4: Simplify right side
   37,240.76x = 1,084,401,832.45
5. Step 5: Solve for x
   x = 1,084,401,832.45/37,240.76
6. Step 6: Final answer
   x = 29,118.68