Finding the Fourth Proportional to 13,973.83, 19,283.50 and 7,686.21

Step by Step Solution

1. Step 1: Write the proportion equation
   13,973.83 : 19,283.50 = 7,686.21 : x
2. Step 2: Convert to fraction form
   13,973.83/19,283.50 = 7,686.21/x
3. Step 3: Cross multiply
   13,973.83x = 19,283.50 × 7,686.21
4. Step 4: Simplify right side
   13,973.83x = 148,217,030.54
5. Step 5: Solve for x
   x = 148,217,030.54/13,973.83
6. Step 6: Final answer
   x = 10,606.76