Finding the Fourth Proportional to 9,100.22, 12,558.24 and 5,121.26

Step by Step Solution

1. Step 1: Write the proportion equation
   9,100.22 : 12,558.24 = 5,121.26 : x
2. Step 2: Convert to fraction form
   9,100.22/12,558.24 = 5,121.26/x
3. Step 3: Cross multiply
   9,100.22x = 12,558.24 × 5,121.26
4. Step 4: Simplify right side
   9,100.22x = 64,314,012.18
5. Step 5: Solve for x
   x = 64,314,012.18/9,100.22
6. Step 6: Final answer
   x = 7,067.30