Finding the Fourth Proportional to 10,690.56, 14,738.40 and 7,902.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,690.56 : 14,738.40 = 7,902.72 : x
2. Step 2: Convert to fraction form
   10,690.56/14,738.40 = 7,902.72/x
3. Step 3: Cross multiply
   10,690.56x = 14,738.40 × 7,902.72
4. Step 4: Simplify right side
   10,690.56x = 116,473,448.45
5. Step 5: Solve for x
   x = 116,473,448.45/10,690.56
6. Step 6: Final answer
   x = 10,894.98