Finding the Fourth Proportional to 37,776.23, 52,131.32 and 20,781.77

Step by Step Solution

1. Step 1: Write the proportion equation
   37,776.23 : 52,131.32 = 20,781.77 : x
2. Step 2: Convert to fraction form
   37,776.23/52,131.32 = 20,781.77/x
3. Step 3: Cross multiply
   37,776.23x = 52,131.32 × 20,781.77
4. Step 4: Simplify right side
   37,776.23x = 1,083,381,088.83
5. Step 5: Solve for x
   x = 1,083,381,088.83/37,776.23
6. Step 6: Final answer
   x = 28,678.91