Finding the Fourth Proportional to 11,908.04, 16,430.31 and 7,129.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,908.04 : 16,430.31 = 7,129.52 : x
2. Step 2: Convert to fraction form
   11,908.04/16,430.31 = 7,129.52/x
3. Step 3: Cross multiply
   11,908.04x = 16,430.31 × 7,129.52
4. Step 4: Simplify right side
   11,908.04x = 117,140,223.75
5. Step 5: Solve for x
   x = 117,140,223.75/11,908.04
6. Step 6: Final answer
   x = 9,837.07