Finding the Fourth Proportional to 9,872.32, 14,812.58 and 4,322.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,872.32 : 14,812.58 = 4,322.80 : x
2. Step 2: Convert to fraction form
   9,872.32/14,812.58 = 4,322.80/x
3. Step 3: Cross multiply
   9,872.32x = 14,812.58 × 4,322.80
4. Step 4: Simplify right side
   9,872.32x = 64,031,820.82
5. Step 5: Solve for x
   x = 64,031,820.82/9,872.32
6. Step 6: Final answer
   x = 6,486.00