Finding the Fourth Proportional to 21,607.39, 29,818.02 and 12,047.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,607.39 : 29,818.02 = 12,047.16 : x
2. Step 2: Convert to fraction form
   21,607.39/29,818.02 = 12,047.16/x
3. Step 3: Cross multiply
   21,607.39x = 29,818.02 × 12,047.16
4. Step 4: Simplify right side
   21,607.39x = 359,222,457.82
5. Step 5: Solve for x
   x = 359,222,457.82/21,607.39
6. Step 6: Final answer
   x = 16,624.98