Finding the Fourth Proportional to 23,050.60, 31,810.02 and 12,979.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,050.60 : 31,810.02 = 12,979.72 : x
2. Step 2: Convert to fraction form
   23,050.60/31,810.02 = 12,979.72/x
3. Step 3: Cross multiply
   23,050.60x = 31,810.02 × 12,979.72
4. Step 4: Simplify right side
   23,050.60x = 412,885,152.79
5. Step 5: Solve for x
   x = 412,885,152.79/23,050.60
6. Step 6: Final answer
   x = 17,912.12