Finding the Fourth Proportional to 14,300.48, 21,435 and 6,899.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,300.48 : 21,435 = 6,899.72 : x
2. Step 2: Convert to fraction form
   14,300.48/21,435 = 6,899.72/x
3. Step 3: Cross multiply
   14,300.48x = 21,435 × 6,899.72
4. Step 4: Simplify right side
   14,300.48x = 147,895,498.20
5. Step 5: Solve for x
   x = 147,895,498.20/14,300.48
6. Step 6: Final answer
   x = 10,342.00