Finding the Fourth Proportional to 9,856.56, 14,787.54 and 4,920.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,856.56 : 14,787.54 = 4,920.24 : x
2. Step 2: Convert to fraction form
   9,856.56/14,787.54 = 4,920.24/x
3. Step 3: Cross multiply
   9,856.56x = 14,787.54 × 4,920.24
4. Step 4: Simplify right side
   9,856.56x = 72,758,245.81
5. Step 5: Solve for x
   x = 72,758,245.81/9,856.56
6. Step 6: Final answer
   x = 7,381.71