Finding the Fourth Proportional to 37,779.84, 52,136.22 and 21,012.84

Step by Step Solution

1. Step 1: Write the proportion equation
   37,779.84 : 52,136.22 = 21,012.84 : x
2. Step 2: Convert to fraction form
   37,779.84/52,136.22 = 21,012.84/x
3. Step 3: Cross multiply
   37,779.84x = 52,136.22 × 21,012.84
4. Step 4: Simplify right side
   37,779.84x = 1,095,530,049.06
5. Step 5: Solve for x
   x = 1,095,530,049.06/37,779.84
6. Step 6: Final answer
   x = 28,997.74