Finding the Fourth Proportional to 37,938.42, 52,360.29 and 21,172.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,938.42 : 52,360.29 = 21,172.50 : x
2. Step 2: Convert to fraction form
   37,938.42/52,360.29 = 21,172.50/x
3. Step 3: Cross multiply
   37,938.42x = 52,360.29 × 21,172.50
4. Step 4: Simplify right side
   37,938.42x = 1,108,598,240.03
5. Step 5: Solve for x
   x = 1,108,598,240.03/37,938.42
6. Step 6: Final answer
   x = 29,220.99