Finding the Fourth Proportional to 12,360.02, 17,054.42 and 9,998.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,360.02 : 17,054.42 = 9,998.06 : x
2. Step 2: Convert to fraction form
   12,360.02/17,054.42 = 9,998.06/x
3. Step 3: Cross multiply
   12,360.02x = 17,054.42 × 9,998.06
4. Step 4: Simplify right side
   12,360.02x = 170,510,979.16
5. Step 5: Solve for x
   x = 170,510,979.16/12,360.02
6. Step 6: Final answer
   x = 13,795.37