Finding the Fourth Proportional to 10,064.39, 13,888.67 and 5,587.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,064.39 : 13,888.67 = 5,587.92 : x
2. Step 2: Convert to fraction form
   10,064.39/13,888.67 = 5,587.92/x
3. Step 3: Cross multiply
   10,064.39x = 13,888.67 × 5,587.92
4. Step 4: Simplify right side
   10,064.39x = 77,608,748.93
5. Step 5: Solve for x
   x = 77,608,748.93/10,064.39
6. Step 6: Final answer
   x = 7,711.23