Finding the Fourth Proportional to 9,191.73, 13,776.66 and 5,287.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,191.73 : 13,776.66 = 5,287.94 : x
2. Step 2: Convert to fraction form
   9,191.73/13,776.66 = 5,287.94/x
3. Step 3: Cross multiply
   9,191.73x = 13,776.66 × 5,287.94
4. Step 4: Simplify right side
   9,191.73x = 72,850,151.48
5. Step 5: Solve for x
   x = 72,850,151.48/9,191.73
6. Step 6: Final answer
   x = 7,925.62