Finding the Fourth Proportional to 23,097.78, 31,875.02 and 12,889.24

Step by Step Solution

1. Step 1: Write the proportion equation
   23,097.78 : 31,875.02 = 12,889.24 : x
2. Step 2: Convert to fraction form
   23,097.78/31,875.02 = 12,889.24/x
3. Step 3: Cross multiply
   23,097.78x = 31,875.02 × 12,889.24
4. Step 4: Simplify right side
   23,097.78x = 410,844,782.78
5. Step 5: Solve for x
   x = 410,844,782.78/23,097.78
6. Step 6: Final answer
   x = 17,787.20