Finding the Fourth Proportional to 9,902.38, 13,663.15 and 5,870.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,902.38 : 13,663.15 = 5,870.48 : x
2. Step 2: Convert to fraction form
   9,902.38/13,663.15 = 5,870.48/x
3. Step 3: Cross multiply
   9,902.38x = 13,663.15 × 5,870.48
4. Step 4: Simplify right side
   9,902.38x = 80,209,151.14
5. Step 5: Solve for x
   x = 80,209,151.14/9,902.38
6. Step 6: Final answer
   x = 8,099.99