Finding the Fourth Proportional to 37,787, 52,146.06 and 21,020

Step by Step Solution

1. Step 1: Write the proportion equation
   37,787 : 52,146.06 = 21,020 : x
2. Step 2: Convert to fraction form
   37,787/52,146.06 = 21,020/x
3. Step 3: Cross multiply
   37,787x = 52,146.06 × 21,020
4. Step 4: Simplify right side
   37,787x = 1,096,110,181.20
5. Step 5: Solve for x
   x = 1,096,110,181.20/37,787
6. Step 6: Final answer
   x = 29,007.60