Finding the Fourth Proportional to 11,495.63, 17,219.15 and 5,260.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,495.63 : 17,219.15 = 5,260.86 : x
2. Step 2: Convert to fraction form
   11,495.63/17,219.15 = 5,260.86/x
3. Step 3: Cross multiply
   11,495.63x = 17,219.15 × 5,260.86
4. Step 4: Simplify right side
   11,495.63x = 90,587,530.89
5. Step 5: Solve for x
   x = 90,587,530.89/11,495.63
6. Step 6: Final answer
   x = 7,880.17