Finding the Fourth Proportional to 11,156.76, 16,740.72 and 7,890.84

Step by Step Solution

1. Step 1: Write the proportion equation
   11,156.76 : 16,740.72 = 7,890.84 : x
2. Step 2: Convert to fraction form
   11,156.76/16,740.72 = 7,890.84/x
3. Step 3: Cross multiply
   11,156.76x = 16,740.72 × 7,890.84
4. Step 4: Simplify right side
   11,156.76x = 132,098,343.00
5. Step 5: Solve for x
   x = 132,098,343.00/11,156.76
6. Step 6: Final answer
   x = 11,840.21