Finding the Fourth Proportional to 9,898.34, 13,659.87 and 5,422.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,898.34 : 13,659.87 = 5,422.52 : x
2. Step 2: Convert to fraction form
   9,898.34/13,659.87 = 5,422.52/x
3. Step 3: Cross multiply
   9,898.34x = 13,659.87 × 5,422.52
4. Step 4: Simplify right side
   9,898.34x = 74,070,822.86
5. Step 5: Solve for x
   x = 74,070,822.86/9,898.34
6. Step 6: Final answer
   x = 7,483.16