Finding the Fourth Proportional to 9,373.59, 13,977.71 and 9,289.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,373.59 : 13,977.71 = 9,289.20 : x
2. Step 2: Convert to fraction form
   9,373.59/13,977.71 = 9,289.20/x
3. Step 3: Cross multiply
   9,373.59x = 13,977.71 × 9,289.20
4. Step 4: Simplify right side
   9,373.59x = 129,841,807.43
5. Step 5: Solve for x
   x = 129,841,807.43/9,373.59
6. Step 6: Final answer
   x = 13,851.88