Finding the Fourth Proportional to 12,681.02, 19,011.22 and 5,290.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,681.02 : 19,011.22 = 5,290.98 : x
2. Step 2: Convert to fraction form
   12,681.02/19,011.22 = 5,290.98/x
3. Step 3: Cross multiply
   12,681.02x = 19,011.22 × 5,290.98
4. Step 4: Simplify right side
   12,681.02x = 100,587,958.34
5. Step 5: Solve for x
   x = 100,587,958.34/12,681.02
6. Step 6: Final answer
   x = 7,932.17