Finding the Fourth Proportional to 37,787.50, 52,147.07 and 21,020.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,787.50 : 52,147.07 = 21,020.50 : x
2. Step 2: Convert to fraction form
   37,787.50/52,147.07 = 21,020.50/x
3. Step 3: Cross multiply
   37,787.50x = 52,147.07 × 21,020.50
4. Step 4: Simplify right side
   37,787.50x = 1,096,157,484.94
5. Step 5: Solve for x
   x = 1,096,157,484.94/37,787.50
6. Step 6: Final answer
   x = 29,008.47