Finding the Fourth Proportional to 9,811.89, 13,540.46 and 5,335.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,811.89 : 13,540.46 = 5,335.62 : x
2. Step 2: Convert to fraction form
   9,811.89/13,540.46 = 5,335.62/x
3. Step 3: Cross multiply
   9,811.89x = 13,540.46 × 5,335.62
4. Step 4: Simplify right side
   9,811.89x = 72,246,722.51
5. Step 5: Solve for x
   x = 72,246,722.51/9,811.89
6. Step 6: Final answer
   x = 7,363.18