Finding the Fourth Proportional to 9,696.60, 13,381.92 and 5,447.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,696.60 : 13,381.92 = 5,447.88 : x
2. Step 2: Convert to fraction form
   9,696.60/13,381.92 = 5,447.88/x
3. Step 3: Cross multiply
   9,696.60x = 13,381.92 × 5,447.88
4. Step 4: Simplify right side
   9,696.60x = 72,903,094.33
5. Step 5: Solve for x
   x = 72,903,094.33/9,696.60
6. Step 6: Final answer
   x = 7,518.42