Finding the Fourth Proportional to 10,899.01, 16,348.43 and 7,200.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,899.01 : 16,348.43 = 7,200.34 : x
2. Step 2: Convert to fraction form
   10,899.01/16,348.43 = 7,200.34/x
3. Step 3: Cross multiply
   10,899.01x = 16,348.43 × 7,200.34
4. Step 4: Simplify right side
   10,899.01x = 117,714,323.56
5. Step 5: Solve for x
   x = 117,714,323.56/10,899.01
6. Step 6: Final answer
   x = 10,800.46