Finding the Fourth Proportional to 12,681.50, 19,030.89 and 4,473.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,681.50 : 19,030.89 = 4,473.50 : x
2. Step 2: Convert to fraction form
   12,681.50/19,030.89 = 4,473.50/x
3. Step 3: Cross multiply
   12,681.50x = 19,030.89 × 4,473.50
4. Step 4: Simplify right side
   12,681.50x = 85,134,686.42
5. Step 5: Solve for x
   x = 85,134,686.42/12,681.50
6. Step 6: Final answer
   x = 6,713.30