Finding the Fourth Proportional to 23,173.10, 31,977.63 and 13,100.94

Step by Step Solution

1. Step 1: Write the proportion equation
   23,173.10 : 31,977.63 = 13,100.94 : x
2. Step 2: Convert to fraction form
   23,173.10/31,977.63 = 13,100.94/x
3. Step 3: Cross multiply
   23,173.10x = 31,977.63 × 13,100.94
4. Step 4: Simplify right side
   23,173.10x = 418,937,011.97
5. Step 5: Solve for x
   x = 418,937,011.97/23,173.10
6. Step 6: Final answer
   x = 18,078.60