Finding the Fourth Proportional to 11,900.17, 16,422.92 and 7,185.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,900.17 : 16,422.92 = 7,185.16 : x
2. Step 2: Convert to fraction form
   11,900.17/16,422.92 = 7,185.16/x
3. Step 3: Cross multiply
   11,900.17x = 16,422.92 × 7,185.16
4. Step 4: Simplify right side
   11,900.17x = 118,001,307.87
5. Step 5: Solve for x
   x = 118,001,307.87/11,900.17
6. Step 6: Final answer
   x = 9,915.93