Finding the Fourth Proportional to 21,997.17, 32,970.96 and 10,911.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,997.17 : 32,970.96 = 10,911.83 : x
2. Step 2: Convert to fraction form
   21,997.17/32,970.96 = 10,911.83/x
3. Step 3: Cross multiply
   21,997.17x = 32,970.96 × 10,911.83
4. Step 4: Simplify right side
   21,997.17x = 359,773,345.60
5. Step 5: Solve for x
   x = 359,773,345.60/21,997.17
6. Step 6: Final answer
   x = 16,355.44