Finding the Fourth Proportional to 8,547.69, 12,796.70 and 4,978.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,547.69 : 12,796.70 = 4,978.92 : x
2. Step 2: Convert to fraction form
   8,547.69/12,796.70 = 4,978.92/x
3. Step 3: Cross multiply
   8,547.69x = 12,796.70 × 4,978.92
4. Step 4: Simplify right side
   8,547.69x = 63,713,806.00
5. Step 5: Solve for x
   x = 63,713,806.00/8,547.69
6. Step 6: Final answer
   x = 7,453.92