Finding the Fourth Proportional to 23,050, 31,808.82 and 12,978.52

Step by Step Solution

1. Step 1: Write the proportion equation
   23,050 : 31,808.82 = 12,978.52 : x
2. Step 2: Convert to fraction form
   23,050/31,808.82 = 12,978.52/x
3. Step 3: Cross multiply
   23,050x = 31,808.82 × 12,978.52
4. Step 4: Simplify right side
   23,050x = 412,831,406.55
5. Step 5: Solve for x
   x = 412,831,406.55/23,050
6. Step 6: Final answer
   x = 17,910.26