Finding the Fourth Proportional to 23,139.46, 31,935.36 and 13,068.37

Step by Step Solution

1. Step 1: Write the proportion equation
   23,139.46 : 31,935.36 = 13,068.37 : x
2. Step 2: Convert to fraction form
   23,139.46/31,935.36 = 13,068.37/x
3. Step 3: Cross multiply
   23,139.46x = 31,935.36 × 13,068.37
4. Step 4: Simplify right side
   23,139.46x = 417,343,100.56
5. Step 5: Solve for x
   x = 417,343,100.56/23,139.46
6. Step 6: Final answer
   x = 18,035.99