Finding the Fourth Proportional to 11,880.17, 17,784.75 and 7,185.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,880.17 : 17,784.75 = 7,185.98 : x
2. Step 2: Convert to fraction form
   11,880.17/17,784.75 = 7,185.98/x
3. Step 3: Cross multiply
   11,880.17x = 17,784.75 × 7,185.98
4. Step 4: Simplify right side
   11,880.17x = 127,800,768.88
5. Step 5: Solve for x
   x = 127,800,768.88/11,880.17
6. Step 6: Final answer
   x = 10,757.49