Finding the Fourth Proportional to 10,088.74, 15,139.59 and 5,709.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,088.74 : 15,139.59 = 5,709.34 : x
2. Step 2: Convert to fraction form
   10,088.74/15,139.59 = 5,709.34/x
3. Step 3: Cross multiply
   10,088.74x = 15,139.59 × 5,709.34
4. Step 4: Simplify right side
   10,088.74x = 86,437,066.77
5. Step 5: Solve for x
   x = 86,437,066.77/10,088.74
6. Step 6: Final answer
   x = 8,567.68