Finding the Fourth Proportional to 9,856.30, 13,601.59 and 5,380.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,856.30 : 13,601.59 = 5,380.01 : x
2. Step 2: Convert to fraction form
   9,856.30/13,601.59 = 5,380.01/x
3. Step 3: Cross multiply
   9,856.30x = 13,601.59 × 5,380.01
4. Step 4: Simplify right side
   9,856.30x = 73,176,710.77
5. Step 5: Solve for x
   x = 73,176,710.77/9,856.30
6. Step 6: Final answer
   x = 7,424.36