Finding the Fourth Proportional to 23,139, 34,704.86 and 10,658.52

Step by Step Solution

1. Step 1: Write the proportion equation
   23,139 : 34,704.86 = 10,658.52 : x
2. Step 2: Convert to fraction form
   23,139/34,704.86 = 10,658.52/x
3. Step 3: Cross multiply
   23,139x = 34,704.86 × 10,658.52
4. Step 4: Simplify right side
   23,139x = 369,902,391.11
5. Step 5: Solve for x
   x = 369,902,391.11/23,139
6. Step 6: Final answer
   x = 15,986.10