Finding the Fourth Proportional to 9,607.88, 13,258.88 and 5,191.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,607.88 : 13,258.88 = 5,191.88 : x
2. Step 2: Convert to fraction form
   9,607.88/13,258.88 = 5,191.88/x
3. Step 3: Cross multiply
   9,607.88x = 13,258.88 × 5,191.88
4. Step 4: Simplify right side
   9,607.88x = 68,838,513.89
5. Step 5: Solve for x
   x = 68,838,513.89/9,607.88
6. Step 6: Final answer
   x = 7,164.80