Finding the Fourth Proportional to 13,559.94, 18,713.70 and 7,591.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,559.94 : 18,713.70 = 7,591.59 : x
2. Step 2: Convert to fraction form
   13,559.94/18,713.70 = 7,591.59/x
3. Step 3: Cross multiply
   13,559.94x = 18,713.70 × 7,591.59
4. Step 4: Simplify right side
   13,559.94x = 142,066,737.78
5. Step 5: Solve for x
   x = 142,066,737.78/13,559.94
6. Step 6: Final answer
   x = 10,476.94