Finding the Fourth Proportional to 9,100.14, 12,558.06 and 5,120.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,100.14 : 12,558.06 = 5,120.94 : x
2. Step 2: Convert to fraction form
   9,100.14/12,558.06 = 5,120.94/x
3. Step 3: Cross multiply
   9,100.14x = 12,558.06 × 5,120.94
4. Step 4: Simplify right side
   9,100.14x = 64,309,071.78
5. Step 5: Solve for x
   x = 64,309,071.78/9,100.14
6. Step 6: Final answer
   x = 7,066.82