Finding the Fourth Proportional to 9,938.30, 13,715.22 and 5,690.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,938.30 : 13,715.22 = 5,690.02 : x
2. Step 2: Convert to fraction form
   9,938.30/13,715.22 = 5,690.02/x
3. Step 3: Cross multiply
   9,938.30x = 13,715.22 × 5,690.02
4. Step 4: Simplify right side
   9,938.30x = 78,039,876.10
5. Step 5: Solve for x
   x = 78,039,876.10/9,938.30
6. Step 6: Final answer
   x = 7,852.44