Finding the Fourth Proportional to 9,903.89, 14,855.85 and 7,407.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,903.89 : 14,855.85 = 7,407.67 : x
2. Step 2: Convert to fraction form
   9,903.89/14,855.85 = 7,407.67/x
3. Step 3: Cross multiply
   9,903.89x = 14,855.85 × 7,407.67
4. Step 4: Simplify right side
   9,903.89x = 110,047,234.37
5. Step 5: Solve for x
   x = 110,047,234.37/9,903.89
6. Step 6: Final answer
   x = 11,111.52