Finding the Fourth Proportional to 9,987.71, 13,784.72 and 9,544.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,987.71 : 13,784.72 = 9,544.84 : x
2. Step 2: Convert to fraction form
   9,987.71/13,784.72 = 9,544.84/x
3. Step 3: Cross multiply
   9,987.71x = 13,784.72 × 9,544.84
4. Step 4: Simplify right side
   9,987.71x = 131,572,864.66
5. Step 5: Solve for x
   x = 131,572,864.66/9,987.71
6. Step 6: Final answer
   x = 13,173.48