Finding the Fourth Proportional to 13,559.55, 18,710.02 and 7,591.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,559.55 : 18,710.02 = 7,591.47 : x
2. Step 2: Convert to fraction form
   13,559.55/18,710.02 = 7,591.47/x
3. Step 3: Cross multiply
   13,559.55x = 18,710.02 × 7,591.47
4. Step 4: Simplify right side
   13,559.55x = 142,036,555.53
5. Step 5: Solve for x
   x = 142,036,555.53/13,559.55
6. Step 6: Final answer
   x = 10,475.02