Finding the Fourth Proportional to 9,326.68, 12,870.40 and 5,077.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,326.68 : 12,870.40 = 5,077.76 : x
2. Step 2: Convert to fraction form
   9,326.68/12,870.40 = 5,077.76/x
3. Step 3: Cross multiply
   9,326.68x = 12,870.40 × 5,077.76
4. Step 4: Simplify right side
   9,326.68x = 65,352,802.30
5. Step 5: Solve for x
   x = 65,352,802.30/9,326.68
6. Step 6: Final answer
   x = 7,007.08