Finding the Fourth Proportional to 6,663.69, 9,192.45 and 5,406.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,663.69 : 9,192.45 = 5,406.15 : x
2. Step 2: Convert to fraction form
   6,663.69/9,192.45 = 5,406.15/x
3. Step 3: Cross multiply
   6,663.69x = 9,192.45 × 5,406.15
4. Step 4: Simplify right side
   6,663.69x = 49,695,763.57
5. Step 5: Solve for x
   x = 49,695,763.57/6,663.69
6. Step 6: Final answer
   x = 7,457.69