Finding the Fourth Proportional to 9,770.31, 13,482.48 and 5,521.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,770.31 : 13,482.48 = 5,521.86 : x
2. Step 2: Convert to fraction form
   9,770.31/13,482.48 = 5,521.86/x
3. Step 3: Cross multiply
   9,770.31x = 13,482.48 × 5,521.86
4. Step 4: Simplify right side
   9,770.31x = 74,448,367.01
5. Step 5: Solve for x
   x = 74,448,367.01/9,770.31
6. Step 6: Final answer
   x = 7,619.86