Finding the Fourth Proportional to 37,690.31, 52,012.63 and 20,923.31

Step by Step Solution

1. Step 1: Write the proportion equation
   37,690.31 : 52,012.63 = 20,923.31 : x
2. Step 2: Convert to fraction form
   37,690.31/52,012.63 = 20,923.31/x
3. Step 3: Cross multiply
   37,690.31x = 52,012.63 × 20,923.31
4. Step 4: Simplify right side
   37,690.31x = 1,088,276,537.59
5. Step 5: Solve for x
   x = 1,088,276,537.59/37,690.31
6. Step 6: Final answer
   x = 28,874.17