Finding the Fourth Proportional to 9,931.96, 13,606.90 and 9,558.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,931.96 : 13,606.90 = 9,558.37 : x
2. Step 2: Convert to fraction form
   9,931.96/13,606.90 = 9,558.37/x
3. Step 3: Cross multiply
   9,931.96x = 13,606.90 × 9,558.37
4. Step 4: Simplify right side
   9,931.96x = 130,059,784.75
5. Step 5: Solve for x
   x = 130,059,784.75/9,931.96
6. Step 6: Final answer
   x = 13,095.08