Finding the Fourth Proportional to 23,521, 32,457.36 and 12,908.56

Step by Step Solution

1. Step 1: Write the proportion equation
   23,521 : 32,457.36 = 12,908.56 : x
2. Step 2: Convert to fraction form
   23,521/32,457.36 = 12,908.56/x
3. Step 3: Cross multiply
   23,521x = 32,457.36 × 12,908.56
4. Step 4: Simplify right side
   23,521x = 418,977,779.00
5. Step 5: Solve for x
   x = 418,977,779.00/23,521
6. Step 6: Final answer
   x = 17,812.92