Finding the Fourth Proportional to 38,112.25, 52,602.27 and 21,989.98

Step by Step Solution

1. Step 1: Write the proportion equation
   38,112.25 : 52,602.27 = 21,989.98 : x
2. Step 2: Convert to fraction form
   38,112.25/52,602.27 = 21,989.98/x
3. Step 3: Cross multiply
   38,112.25x = 52,602.27 × 21,989.98
4. Step 4: Simplify right side
   38,112.25x = 1,156,723,003.16
5. Step 5: Solve for x
   x = 1,156,723,003.16/38,112.25
6. Step 6: Final answer
   x = 30,350.43