Finding the Fourth Proportional to 12,715.89, 19,079.51 and 4,925.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,715.89 : 19,079.51 = 4,925.31 : x
2. Step 2: Convert to fraction form
   12,715.89/19,079.51 = 4,925.31/x
3. Step 3: Cross multiply
   12,715.89x = 19,079.51 × 4,925.31
4. Step 4: Simplify right side
   12,715.89x = 93,972,476.77
5. Step 5: Solve for x
   x = 93,972,476.77/12,715.89
6. Step 6: Final answer
   x = 7,390.16