Finding the Fourth Proportional to 7,486.05, 10,330.59 and 4,128.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,486.05 : 10,330.59 = 4,128.81 : x
2. Step 2: Convert to fraction form
   7,486.05/10,330.59 = 4,128.81/x
3. Step 3: Cross multiply
   7,486.05x = 10,330.59 × 4,128.81
4. Step 4: Simplify right side
   7,486.05x = 42,652,996.82
5. Step 5: Solve for x
   x = 42,652,996.82/7,486.05
6. Step 6: Final answer
   x = 5,697.66