Finding the Fourth Proportional to 11,507.88, 15,888.72 and 8,814.32

Step by Step Solution

1. Step 1: Write the proportion equation
   11,507.88 : 15,888.72 = 8,814.32 : x
2. Step 2: Convert to fraction form
   11,507.88/15,888.72 = 8,814.32/x
3. Step 3: Cross multiply
   11,507.88x = 15,888.72 × 8,814.32
4. Step 4: Simplify right side
   11,507.88x = 140,048,262.47
5. Step 5: Solve for x
   x = 140,048,262.47/11,507.88
6. Step 6: Final answer
   x = 12,169.77