Finding the Fourth Proportional to 21,981.02, 32,976.72 and 7,189.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,981.02 : 32,976.72 = 7,189.88 : x
2. Step 2: Convert to fraction form
   21,981.02/32,976.72 = 7,189.88/x
3. Step 3: Cross multiply
   21,981.02x = 32,976.72 × 7,189.88
4. Step 4: Simplify right side
   21,981.02x = 237,098,659.59
5. Step 5: Solve for x
   x = 237,098,659.59/21,981.02
6. Step 6: Final answer
   x = 10,786.52