Finding the Fourth Proportional to 23,051.25, 31,811.31 and 12,980.07

Step by Step Solution

1. Step 1: Write the proportion equation
   23,051.25 : 31,811.31 = 12,980.07 : x
2. Step 2: Convert to fraction form
   23,051.25/31,811.31 = 12,980.07/x
3. Step 3: Cross multiply
   23,051.25x = 31,811.31 × 12,980.07
4. Step 4: Simplify right side
   23,051.25x = 412,913,030.59
5. Step 5: Solve for x
   x = 412,913,030.59/23,051.25
6. Step 6: Final answer
   x = 17,912.83