Finding the Fourth Proportional to 12,036.17, 17,961.34 and 10,578.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,036.17 : 17,961.34 = 10,578.32 : x
2. Step 2: Convert to fraction form
   12,036.17/17,961.34 = 10,578.32/x
3. Step 3: Cross multiply
   12,036.17x = 17,961.34 × 10,578.32
4. Step 4: Simplify right side
   12,036.17x = 190,000,802.15
5. Step 5: Solve for x
   x = 190,000,802.15/12,036.17
6. Step 6: Final answer
   x = 15,785.82