Finding the Fourth Proportional to 9,622.32, 13,278.86 and 5,643.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,622.32 : 13,278.86 = 5,643.51 : x
2. Step 2: Convert to fraction form
   9,622.32/13,278.86 = 5,643.51/x
3. Step 3: Cross multiply
   9,622.32x = 13,278.86 × 5,643.51
4. Step 4: Simplify right side
   9,622.32x = 74,939,379.20
5. Step 5: Solve for x
   x = 74,939,379.20/9,622.32
6. Step 6: Final answer
   x = 7,788.08