Finding the Fourth Proportional to 8,931.37, 13,378.89 and 5,801.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,931.37 : 13,378.89 = 5,801.89 : x
2. Step 2: Convert to fraction form
   8,931.37/13,378.89 = 5,801.89/x
3. Step 3: Cross multiply
   8,931.37x = 13,378.89 × 5,801.89
4. Step 4: Simplify right side
   8,931.37x = 77,622,848.10
5. Step 5: Solve for x
   x = 77,622,848.10/8,931.37
6. Step 6: Final answer
   x = 8,691.03