Finding the Fourth Proportional to 37,776.58, 52,129.62 and 21,008.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,776.58 : 52,129.62 = 21,008.50 : x
2. Step 2: Convert to fraction form
   37,776.58/52,129.62 = 21,008.50/x
3. Step 3: Cross multiply
   37,776.58x = 52,129.62 × 21,008.50
4. Step 4: Simplify right side
   37,776.58x = 1,095,165,121.77
5. Step 5: Solve for x
   x = 1,095,165,121.77/37,776.58
6. Step 6: Final answer
   x = 28,990.58