Finding the Fourth Proportional to 23,090.34, 31,864.82 and 12,479.96

Step by Step Solution

1. Step 1: Write the proportion equation
   23,090.34 : 31,864.82 = 12,479.96 : x
2. Step 2: Convert to fraction form
   23,090.34/31,864.82 = 12,479.96/x
3. Step 3: Cross multiply
   23,090.34x = 31,864.82 × 12,479.96
4. Step 4: Simplify right side
   23,090.34x = 397,671,679.01
5. Step 5: Solve for x
   x = 397,671,679.01/23,090.34
6. Step 6: Final answer
   x = 17,222.43