Finding the Fourth Proportional to 10,064.26, 13,888.50 and 5,587.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,064.26 : 13,888.50 = 5,587.78 : x
2. Step 2: Convert to fraction form
   10,064.26/13,888.50 = 5,587.78/x
3. Step 3: Cross multiply
   10,064.26x = 13,888.50 × 5,587.78
4. Step 4: Simplify right side
   10,064.26x = 77,605,882.53
5. Step 5: Solve for x
   x = 77,605,882.53/10,064.26
6. Step 6: Final answer
   x = 7,711.04