Finding the Fourth Proportional to 10,145.55, 13,999.59 and 5,669.13

Step by Step Solution

1. Step 1: Write the proportion equation
   10,145.55 : 13,999.59 = 5,669.13 : x
2. Step 2: Convert to fraction form
   10,145.55/13,999.59 = 5,669.13/x
3. Step 3: Cross multiply
   10,145.55x = 13,999.59 × 5,669.13
4. Step 4: Simplify right side
   10,145.55x = 79,365,495.66
5. Step 5: Solve for x
   x = 79,365,495.66/10,145.55
6. Step 6: Final answer
   x = 7,822.69