Finding the Fourth Proportional to 11,355, 17,018.08 and 5,108.32

Step by Step Solution

1. Step 1: Write the proportion equation
   11,355 : 17,018.08 = 5,108.32 : x
2. Step 2: Convert to fraction form
   11,355/17,018.08 = 5,108.32/x
3. Step 3: Cross multiply
   11,355x = 17,018.08 × 5,108.32
4. Step 4: Simplify right side
   11,355x = 86,933,798.43
5. Step 5: Solve for x
   x = 86,933,798.43/11,355
6. Step 6: Final answer
   x = 7,655.99