Finding the Fourth Proportional to 37,773.31, 52,128.53 and 20,778.86

Step by Step Solution

1. Step 1: Write the proportion equation
   37,773.31 : 52,128.53 = 20,778.86 : x
2. Step 2: Convert to fraction form
   37,773.31/52,128.53 = 20,778.86/x
3. Step 3: Cross multiply
   37,773.31x = 52,128.53 × 20,778.86
4. Step 4: Simplify right side
   37,773.31x = 1,083,171,322.98
5. Step 5: Solve for x
   x = 1,083,171,322.98/37,773.31
6. Step 6: Final answer
   x = 28,675.58