Finding the Fourth Proportional to 37,895.86, 52,297.77 and 21,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,895.86 : 52,297.77 = 21,128.50 : x
2. Step 2: Convert to fraction form
   37,895.86/52,297.77 = 21,128.50/x
3. Step 3: Cross multiply
   37,895.86x = 52,297.77 × 21,128.50
4. Step 4: Simplify right side
   37,895.86x = 1,104,973,433.45
5. Step 5: Solve for x
   x = 1,104,973,433.45/37,895.86
6. Step 6: Final answer
   x = 29,158.16