Finding the Fourth Proportional to 21,962.89, 30,300.91 and 12,525.99

Step by Step Solution

1. Step 1: Write the proportion equation
   21,962.89 : 30,300.91 = 12,525.99 : x
2. Step 2: Convert to fraction form
   21,962.89/30,300.91 = 12,525.99/x
3. Step 3: Cross multiply
   21,962.89x = 30,300.91 × 12,525.99
4. Step 4: Simplify right side
   21,962.89x = 379,548,895.65
5. Step 5: Solve for x
   x = 379,548,895.65/21,962.89
6. Step 6: Final answer
   x = 17,281.37