Finding the Fourth Proportional to 12,848.76, 19,259.33 and 8,404.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,848.76 : 19,259.33 = 8,404.74 : x
2. Step 2: Convert to fraction form
   12,848.76/19,259.33 = 8,404.74/x
3. Step 3: Cross multiply
   12,848.76x = 19,259.33 × 8,404.74
4. Step 4: Simplify right side
   12,848.76x = 161,869,619.20
5. Step 5: Solve for x
   x = 161,869,619.20/12,848.76
6. Step 6: Final answer
   x = 12,598.07