Finding the Fourth Proportional to 9,100.02, 12,558.54 and 5,121.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,100.02 : 12,558.54 = 5,121.42 : x
2. Step 2: Convert to fraction form
   9,100.02/12,558.54 = 5,121.42/x
3. Step 3: Cross multiply
   9,100.02x = 12,558.54 × 5,121.42
4. Step 4: Simplify right side
   9,100.02x = 64,317,557.93
5. Step 5: Solve for x
   x = 64,317,557.93/9,100.02
6. Step 6: Final answer
   x = 7,067.85