Finding the Fourth Proportional to 21,607.30, 29,817.48 and 12,047.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,607.30 : 29,817.48 = 12,047.32 : x
2. Step 2: Convert to fraction form
   21,607.30/29,817.48 = 12,047.32/x
3. Step 3: Cross multiply
   21,607.30x = 29,817.48 × 12,047.32
4. Step 4: Simplify right side
   21,607.30x = 359,220,723.15
5. Step 5: Solve for x
   x = 359,220,723.15/21,607.30
6. Step 6: Final answer
   x = 16,624.97