Finding the Fourth Proportional to 15,658.05, 23,490.72 and 5,128.01

Step by Step Solution

1. Step 1: Write the proportion equation
   15,658.05 : 23,490.72 = 5,128.01 : x
2. Step 2: Convert to fraction form
   15,658.05/23,490.72 = 5,128.01/x
3. Step 3: Cross multiply
   15,658.05x = 23,490.72 × 5,128.01
4. Step 4: Simplify right side
   15,658.05x = 120,460,647.07
5. Step 5: Solve for x
   x = 120,460,647.07/15,658.05
6. Step 6: Final answer
   x = 7,693.21