Finding the Fourth Proportional to 9,175.88, 12,663.93 and 5,196.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,175.88 : 12,663.93 = 5,196.99 : x
2. Step 2: Convert to fraction form
   9,175.88/12,663.93 = 5,196.99/x
3. Step 3: Cross multiply
   9,175.88x = 12,663.93 × 5,196.99
4. Step 4: Simplify right side
   9,175.88x = 65,814,317.57
5. Step 5: Solve for x
   x = 65,814,317.57/9,175.88
6. Step 6: Final answer
   x = 7,172.54