Finding the Fourth Proportional to 9,991.68, 14,984.64 and 3,066.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,991.68 : 14,984.64 = 3,066.72 : x
2. Step 2: Convert to fraction form
   9,991.68/14,984.64 = 3,066.72/x
3. Step 3: Cross multiply
   9,991.68x = 14,984.64 × 3,066.72
4. Step 4: Simplify right side
   9,991.68x = 45,953,695.18
5. Step 5: Solve for x
   x = 45,953,695.18/9,991.68
6. Step 6: Final answer
   x = 4,599.20