Finding the Fourth Proportional to 23,619, 32,607.70 and 15,672.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,619 : 32,607.70 = 15,672.12 : x
2. Step 2: Convert to fraction form
   23,619/32,607.70 = 15,672.12/x
3. Step 3: Cross multiply
   23,619x = 32,607.70 × 15,672.12
4. Step 4: Simplify right side
   23,619x = 511,031,787.32
5. Step 5: Solve for x
   x = 511,031,787.32/23,619
6. Step 6: Final answer
   x = 21,636.47