Finding the Fourth Proportional to 9,100.73, 12,558.42 and 5,121.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,100.73 : 12,558.42 = 5,121.95 : x
2. Step 2: Convert to fraction form
   9,100.73/12,558.42 = 5,121.95/x
3. Step 3: Cross multiply
   9,100.73x = 12,558.42 × 5,121.95
4. Step 4: Simplify right side
   9,100.73x = 64,323,536.53
5. Step 5: Solve for x
   x = 64,323,536.53/9,100.73
6. Step 6: Final answer
   x = 7,067.96