Finding the Fourth Proportional to 7,801.59, 11,699.63 and 3,640.83

Step by Step Solution

1. Step 1: Write the proportion equation
   7,801.59 : 11,699.63 = 3,640.83 : x
2. Step 2: Convert to fraction form
   7,801.59/11,699.63 = 3,640.83/x
3. Step 3: Cross multiply
   7,801.59x = 11,699.63 × 3,640.83
4. Step 4: Simplify right side
   7,801.59x = 42,596,363.89
5. Step 5: Solve for x
   x = 42,596,363.89/7,801.59
6. Step 6: Final answer
   x = 5,459.96