Finding the Fourth Proportional to 9,107.22, 12,566.93 and 5,128.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,107.22 : 12,566.93 = 5,128.23 : x
2. Step 2: Convert to fraction form
   9,107.22/12,566.93 = 5,128.23/x
3. Step 3: Cross multiply
   9,107.22x = 12,566.93 × 5,128.23
4. Step 4: Simplify right side
   9,107.22x = 64,446,081.79
5. Step 5: Solve for x
   x = 64,446,081.79/9,107.22
6. Step 6: Final answer
   x = 7,076.37