Finding the Fourth Proportional to 10,064.38, 13,888.59 and 5,587.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,064.38 : 13,888.59 = 5,587.99 : x
2. Step 2: Convert to fraction form
   10,064.38/13,888.59 = 5,587.99/x
3. Step 3: Cross multiply
   10,064.38x = 13,888.59 × 5,587.99
4. Step 4: Simplify right side
   10,064.38x = 77,609,302.03
5. Step 5: Solve for x
   x = 77,609,302.03/10,064.38
6. Step 6: Final answer
   x = 7,711.28