Finding the Fourth Proportional to 9,870.69, 14,789.60 and 6,942.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870.69 : 14,789.60 = 6,942.84 : x
2. Step 2: Convert to fraction form
   9,870.69/14,789.60 = 6,942.84/x
3. Step 3: Cross multiply
   9,870.69x = 14,789.60 × 6,942.84
4. Step 4: Simplify right side
   9,870.69x = 102,681,826.46
5. Step 5: Solve for x
   x = 102,681,826.46/9,870.69
6. Step 6: Final answer
   x = 10,402.70