Finding the Fourth Proportional to 21,498.51, 29,666.32 and 12,065.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,498.51 : 29,666.32 = 12,065.25 : x
2. Step 2: Convert to fraction form
   21,498.51/29,666.32 = 12,065.25/x
3. Step 3: Cross multiply
   21,498.51x = 29,666.32 × 12,065.25
4. Step 4: Simplify right side
   21,498.51x = 357,931,507.05
5. Step 5: Solve for x
   x = 357,931,507.05/21,498.51
6. Step 6: Final answer
   x = 16,649.13