Finding the Fourth Proportional to 5,791.31, 8,645.03 and 5,090.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,791.31 : 8,645.03 = 5,090.69 : x
2. Step 2: Convert to fraction form
   5,791.31/8,645.03 = 5,090.69/x
3. Step 3: Cross multiply
   5,791.31x = 8,645.03 × 5,090.69
4. Step 4: Simplify right side
   5,791.31x = 44,009,167.77
5. Step 5: Solve for x
   x = 44,009,167.77/5,791.31
6. Step 6: Final answer
   x = 7,599.17