Finding the Fourth Proportional to 12,966.51, 19,451.54 and 4,648.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,966.51 : 19,451.54 = 4,648.83 : x
2. Step 2: Convert to fraction form
   12,966.51/19,451.54 = 4,648.83/x
3. Step 3: Cross multiply
   12,966.51x = 19,451.54 × 4,648.83
4. Step 4: Simplify right side
   12,966.51x = 90,426,841.38
5. Step 5: Solve for x
   x = 90,426,841.38/12,966.51
6. Step 6: Final answer
   x = 6,973.87