Finding the Fourth Proportional to 9,100.05, 12,557.54 and 5,120.93

Step by Step Solution

1. Step 1: Write the proportion equation
   9,100.05 : 12,557.54 = 5,120.93 : x
2. Step 2: Convert to fraction form
   9,100.05/12,557.54 = 5,120.93/x
3. Step 3: Cross multiply
   9,100.05x = 12,557.54 × 5,120.93
4. Step 4: Simplify right side
   9,100.05x = 64,306,194.92
5. Step 5: Solve for x
   x = 64,306,194.92/9,100.05
6. Step 6: Final answer
   x = 7,066.58