Finding the Fourth Proportional to 12,875.34, 19,315.96 and 5,482.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,875.34 : 19,315.96 = 5,482.20 : x
2. Step 2: Convert to fraction form
   12,875.34/19,315.96 = 5,482.20/x
3. Step 3: Cross multiply
   12,875.34x = 19,315.96 × 5,482.20
4. Step 4: Simplify right side
   12,875.34x = 105,893,955.91
5. Step 5: Solve for x
   x = 105,893,955.91/12,875.34
6. Step 6: Final answer
   x = 8,224.56