Finding the Fourth Proportional to 13,929.47, 19,222.51 and 7,641.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,929.47 : 19,222.51 = 7,641.84 : x
2. Step 2: Convert to fraction form
   13,929.47/19,222.51 = 7,641.84/x
3. Step 3: Cross multiply
   13,929.47x = 19,222.51 × 7,641.84
4. Step 4: Simplify right side
   13,929.47x = 146,895,345.82
5. Step 5: Solve for x
   x = 146,895,345.82/13,929.47
6. Step 6: Final answer
   x = 10,545.65