Finding the Fourth Proportional to 9,983.91, 13,777.56 and 5,507.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,983.91 : 13,777.56 = 5,507.58 : x
2. Step 2: Convert to fraction form
   9,983.91/13,777.56 = 5,507.58/x
3. Step 3: Cross multiply
   9,983.91x = 13,777.56 × 5,507.58
4. Step 4: Simplify right side
   9,983.91x = 75,881,013.90
5. Step 5: Solve for x
   x = 75,881,013.90/9,983.91
6. Step 6: Final answer
   x = 7,600.33