Finding the Fourth Proportional to 10,886.64, 16,317.69 and 4,643.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,886.64 : 16,317.69 = 4,643.49 : x
2. Step 2: Convert to fraction form
   10,886.64/16,317.69 = 4,643.49/x
3. Step 3: Cross multiply
   10,886.64x = 16,317.69 × 4,643.49
4. Step 4: Simplify right side
   10,886.64x = 75,771,030.34
5. Step 5: Solve for x
   x = 75,771,030.34/10,886.64
6. Step 6: Final answer
   x = 6,960.00