Finding the Fourth Proportional to 21,588.48, 32,382.72 and 12,348

Step by Step Solution

1. Step 1: Write the proportion equation
   21,588.48 : 32,382.72 = 12,348 : x
2. Step 2: Convert to fraction form
   21,588.48/32,382.72 = 12,348/x
3. Step 3: Cross multiply
   21,588.48x = 32,382.72 × 12,348
4. Step 4: Simplify right side
   21,588.48x = 399,861,826.56
5. Step 5: Solve for x
   x = 399,861,826.56/21,588.48
6. Step 6: Final answer
   x = 18,522