Finding the Fourth Proportional to 21,406.42, 32,088.54 and 12,510.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,406.42 : 32,088.54 = 12,510.46 : x
2. Step 2: Convert to fraction form
   21,406.42/32,088.54 = 12,510.46/x
3. Step 3: Cross multiply
   21,406.42x = 32,088.54 × 12,510.46
4. Step 4: Simplify right side
   21,406.42x = 401,442,396.13
5. Step 5: Solve for x
   x = 401,442,396.13/21,406.42
6. Step 6: Final answer
   x = 18,753.36