Finding the Fourth Proportional to 23,421.17, 32,321.98 and 12,810.80

Step by Step Solution

1. Step 1: Write the proportion equation
   23,421.17 : 32,321.98 = 12,810.80 : x
2. Step 2: Convert to fraction form
   23,421.17/32,321.98 = 12,810.80/x
3. Step 3: Cross multiply
   23,421.17x = 32,321.98 × 12,810.80
4. Step 4: Simplify right side
   23,421.17x = 414,070,195.72
5. Step 5: Solve for x
   x = 414,070,195.72/23,421.17
6. Step 6: Final answer
   x = 17,679.32