Finding the Fourth Proportional to 9,990.68, 14,973.40 and 5,061.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,990.68 : 14,973.40 = 5,061.56 : x
2. Step 2: Convert to fraction form
   9,990.68/14,973.40 = 5,061.56/x
3. Step 3: Cross multiply
   9,990.68x = 14,973.40 × 5,061.56
4. Step 4: Simplify right side
   9,990.68x = 75,788,762.50
5. Step 5: Solve for x
   x = 75,788,762.50/9,990.68
6. Step 6: Final answer
   x = 7,585.95