Finding the Fourth Proportional to 12,666.37, 19,006.41 and 5,275.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,666.37 : 19,006.41 = 5,275.93 : x
2. Step 2: Convert to fraction form
   12,666.37/19,006.41 = 5,275.93/x
3. Step 3: Cross multiply
   12,666.37x = 19,006.41 × 5,275.93
4. Step 4: Simplify right side
   12,666.37x = 100,276,488.71
5. Step 5: Solve for x
   x = 100,276,488.71/12,666.37
6. Step 6: Final answer
   x = 7,916.75