Finding the Fourth Proportional to 12,848.29, 19,275.80 and 5,453.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,848.29 : 19,275.80 = 5,453.05 : x
2. Step 2: Convert to fraction form
   12,848.29/19,275.80 = 5,453.05/x
3. Step 3: Cross multiply
   12,848.29x = 19,275.80 × 5,453.05
4. Step 4: Simplify right side
   12,848.29x = 105,111,901.19
5. Step 5: Solve for x
   x = 105,111,901.19/12,848.29
6. Step 6: Final answer
   x = 8,181.00