Finding the Fourth Proportional to 12,499.84, 18,722.96 and 5,916.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.84 : 18,722.96 = 5,916.16 : x
2. Step 2: Convert to fraction form
   12,499.84/18,722.96 = 5,916.16/x
3. Step 3: Cross multiply
   12,499.84x = 18,722.96 × 5,916.16
4. Step 4: Simplify right side
   12,499.84x = 110,768,027.03
5. Step 5: Solve for x
   x = 110,768,027.03/12,499.84
6. Step 6: Final answer
   x = 8,861.56