Finding the Fourth Proportional to 9,776.82, 13,490.72 and 5,528.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,776.82 : 13,490.72 = 5,528.46 : x
2. Step 2: Convert to fraction form
   9,776.82/13,490.72 = 5,528.46/x
3. Step 3: Cross multiply
   9,776.82x = 13,490.72 × 5,528.46
4. Step 4: Simplify right side
   9,776.82x = 74,582,810.80
5. Step 5: Solve for x
   x = 74,582,810.80/9,776.82
6. Step 6: Final answer
   x = 7,628.54