Finding the Fourth Proportional to 9,988.34, 13,783.97 and 5,512.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,988.34 : 13,783.97 = 5,512.08 : x
2. Step 2: Convert to fraction form
   9,988.34/13,783.97 = 5,512.08/x
3. Step 3: Cross multiply
   9,988.34x = 13,783.97 × 5,512.08
4. Step 4: Simplify right side
   9,988.34x = 75,978,317.80
5. Step 5: Solve for x
   x = 75,978,317.80/9,988.34
6. Step 6: Final answer
   x = 7,606.70