Finding the Fourth Proportional to 12,903.06, 17,804.25 and 7,238.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,903.06 : 17,804.25 = 7,238.10 : x
2. Step 2: Convert to fraction form
   12,903.06/17,804.25 = 7,238.10/x
3. Step 3: Cross multiply
   12,903.06x = 17,804.25 × 7,238.10
4. Step 4: Simplify right side
   12,903.06x = 128,868,941.93
5. Step 5: Solve for x
   x = 128,868,941.93/12,903.06
6. Step 6: Final answer
   x = 9,987.47