Finding the Fourth Proportional to 23,173.02, 31,978.80 and 12,562.65

Step by Step Solution

1. Step 1: Write the proportion equation
   23,173.02 : 31,978.80 = 12,562.65 : x
2. Step 2: Convert to fraction form
   23,173.02/31,978.80 = 12,562.65/x
3. Step 3: Cross multiply
   23,173.02x = 31,978.80 × 12,562.65
4. Step 4: Simplify right side
   23,173.02x = 401,738,471.82
5. Step 5: Solve for x
   x = 401,738,471.82/23,173.02
6. Step 6: Final answer
   x = 17,336.47