Finding the Fourth Proportional to 9,488.21, 13,088.55 and 5,709.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,488.21 : 13,088.55 = 5,709.10 : x
2. Step 2: Convert to fraction form
   9,488.21/13,088.55 = 5,709.10/x
3. Step 3: Cross multiply
   9,488.21x = 13,088.55 × 5,709.10
4. Step 4: Simplify right side
   9,488.21x = 74,723,801.83
5. Step 5: Solve for x
   x = 74,723,801.83/9,488.21
6. Step 6: Final answer
   x = 7,875.44