Finding the Fourth Proportional to 10,707.61, 16,061.38 and 2,916.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,707.61 : 16,061.38 = 2,916.40 : x
2. Step 2: Convert to fraction form
   10,707.61/16,061.38 = 2,916.40/x
3. Step 3: Cross multiply
   10,707.61x = 16,061.38 × 2,916.40
4. Step 4: Simplify right side
   10,707.61x = 46,841,408.63
5. Step 5: Solve for x
   x = 46,841,408.63/10,707.61
6. Step 6: Final answer
   x = 4,374.59