Finding the Fourth Proportional to 11,354.00, 17,030.78 and 5,109.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,354.00 : 17,030.78 = 5,109.61 : x
2. Step 2: Convert to fraction form
   11,354.00/17,030.78 = 5,109.61/x
3. Step 3: Cross multiply
   11,354.00x = 17,030.78 × 5,109.61
4. Step 4: Simplify right side
   11,354.00x = 87,020,593.24
5. Step 5: Solve for x
   x = 87,020,593.24/11,354.00
6. Step 6: Final answer
   x = 7,664.31