Finding the Fourth Proportional to 12,837.83, 17,715.98 and 7,172.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,837.83 : 17,715.98 = 7,172.69 : x
2. Step 2: Convert to fraction form
   12,837.83/17,715.98 = 7,172.69/x
3. Step 3: Cross multiply
   12,837.83x = 17,715.98 × 7,172.69
4. Step 4: Simplify right side
   12,837.83x = 127,071,161.94
5. Step 5: Solve for x
   x = 127,071,161.94/12,837.83
6. Step 6: Final answer
   x = 9,898.18