Finding the Fourth Proportional to 9,398.08, 12,968.40 and 5,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,398.08 : 12,968.40 = 5,620.50 : x
2. Step 2: Convert to fraction form
   9,398.08/12,968.40 = 5,620.50/x
3. Step 3: Cross multiply
   9,398.08x = 12,968.40 × 5,620.50
4. Step 4: Simplify right side
   9,398.08x = 72,888,827.36
5. Step 5: Solve for x
   x = 72,888,827.36/9,398.08
6. Step 6: Final answer
   x = 7,755.71