Finding the Fourth Proportional to 7,090.30, 10,628.59 and 3,971.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,090.30 : 10,628.59 = 3,971.82 : x
2. Step 2: Convert to fraction form
   7,090.30/10,628.59 = 3,971.82/x
3. Step 3: Cross multiply
   7,090.30x = 10,628.59 × 3,971.82
4. Step 4: Simplify right side
   7,090.30x = 42,214,846.33
5. Step 5: Solve for x
   x = 42,214,846.33/7,090.30
6. Step 6: Final answer
   x = 5,953.89