Finding the Fourth Proportional to 21,984, 32,981.12 and 7,392

Step by Step Solution

1. Step 1: Write the proportion equation
   21,984 : 32,981.12 = 7,392 : x
2. Step 2: Convert to fraction form
   21,984/32,981.12 = 7,392/x
3. Step 3: Cross multiply
   21,984x = 32,981.12 × 7,392
4. Step 4: Simplify right side
   21,984x = 243,796,439.04
5. Step 5: Solve for x
   x = 243,796,439.04/21,984
6. Step 6: Final answer
   x = 11,089.72