Finding the Fourth Proportional to 12,591.31, 17,375.61 and 6,926.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,591.31 : 17,375.61 = 6,926.02 : x
2. Step 2: Convert to fraction form
   12,591.31/17,375.61 = 6,926.02/x
3. Step 3: Cross multiply
   12,591.31x = 17,375.61 × 6,926.02
4. Step 4: Simplify right side
   12,591.31x = 120,343,822.37
5. Step 5: Solve for x
   x = 120,343,822.37/12,591.31
6. Step 6: Final answer
   x = 9,557.69