Finding the Fourth Proportional to 9,898.34, 13,659.48 and 5,591.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,898.34 : 13,659.48 = 5,591.03 : x
2. Step 2: Convert to fraction form
   9,898.34/13,659.48 = 5,591.03/x
3. Step 3: Cross multiply
   9,898.34x = 13,659.48 × 5,591.03
4. Step 4: Simplify right side
   9,898.34x = 76,370,494.17
5. Step 5: Solve for x
   x = 76,370,494.17/9,898.34
6. Step 6: Final answer
   x = 7,715.49