Finding the Fourth Proportional to 12,985.32, 19,461.34 and 8,303.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,985.32 : 19,461.34 = 8,303.48 : x
2. Step 2: Convert to fraction form
   12,985.32/19,461.34 = 8,303.48/x
3. Step 3: Cross multiply
   12,985.32x = 19,461.34 × 8,303.48
4. Step 4: Simplify right side
   12,985.32x = 161,596,847.46
5. Step 5: Solve for x
   x = 161,596,847.46/12,985.32
6. Step 6: Final answer
   x = 12,444.58