Finding the Fourth Proportional to 12,875.65, 19,300.22 and 7,317.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,875.65 : 19,300.22 = 7,317.12 : x
2. Step 2: Convert to fraction form
   12,875.65/19,300.22 = 7,317.12/x
3. Step 3: Cross multiply
   12,875.65x = 19,300.22 × 7,317.12
4. Step 4: Simplify right side
   12,875.65x = 141,222,025.77
5. Step 5: Solve for x
   x = 141,222,025.77/12,875.65
6. Step 6: Final answer
   x = 10,968.15