Finding the Fourth Proportional to 12,591.36, 17,376.48 and 7,002.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,591.36 : 17,376.48 = 7,002.72 : x
2. Step 2: Convert to fraction form
   12,591.36/17,376.48 = 7,002.72/x
3. Step 3: Cross multiply
   12,591.36x = 17,376.48 × 7,002.72
4. Step 4: Simplify right side
   12,591.36x = 121,682,624.03
5. Step 5: Solve for x
   x = 121,682,624.03/12,591.36
6. Step 6: Final answer
   x = 9,663.98