Finding the Fourth Proportional to 9,990.28, 14,981.52 and 3,746.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,990.28 : 14,981.52 = 3,746.88 : x
2. Step 2: Convert to fraction form
   9,990.28/14,981.52 = 3,746.88/x
3. Step 3: Cross multiply
   9,990.28x = 14,981.52 × 3,746.88
4. Step 4: Simplify right side
   9,990.28x = 56,133,957.66
5. Step 5: Solve for x
   x = 56,133,957.66/9,990.28
6. Step 6: Final answer
   x = 5,618.86