Finding the Fourth Proportional to 9,782.80, 13,499.64 and 5,590.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,782.80 : 13,499.64 = 5,590.96 : x
2. Step 2: Convert to fraction form
   9,782.80/13,499.64 = 5,590.96/x
3. Step 3: Cross multiply
   9,782.80x = 13,499.64 × 5,590.96
4. Step 4: Simplify right side
   9,782.80x = 75,475,947.25
5. Step 5: Solve for x
   x = 75,475,947.25/9,782.80
6. Step 6: Final answer
   x = 7,715.17