Finding the Fourth Proportional to 37,782.09, 52,139.33 and 21,015.09

Step by Step Solution

1. Step 1: Write the proportion equation
   37,782.09 : 52,139.33 = 21,015.09 : x
2. Step 2: Convert to fraction form
   37,782.09/52,139.33 = 21,015.09/x
3. Step 3: Cross multiply
   37,782.09x = 52,139.33 × 21,015.09
4. Step 4: Simplify right side
   37,782.09x = 1,095,712,607.41
5. Step 5: Solve for x
   x = 1,095,712,607.41/37,782.09
6. Step 6: Final answer
   x = 29,000.85