Finding the Fourth Proportional to 13,182.48, 19,756.31 and 7,900.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,182.48 : 19,756.31 = 7,900.47 : x
2. Step 2: Convert to fraction form
   13,182.48/19,756.31 = 7,900.47/x
3. Step 3: Cross multiply
   13,182.48x = 19,756.31 × 7,900.47
4. Step 4: Simplify right side
   13,182.48x = 156,084,094.96
5. Step 5: Solve for x
   x = 156,084,094.96/13,182.48
6. Step 6: Final answer
   x = 11,840.27