Finding the Fourth Proportional to 21,491.42, 29,658.25 and 12,060.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,491.42 : 29,658.25 = 12,060.02 : x
2. Step 2: Convert to fraction form
   21,491.42/29,658.25 = 12,060.02/x
3. Step 3: Cross multiply
   21,491.42x = 29,658.25 × 12,060.02
4. Step 4: Simplify right side
   21,491.42x = 357,679,088.17
5. Step 5: Solve for x
   x = 357,679,088.17/21,491.42
6. Step 6: Final answer
   x = 16,642.88