Finding the Fourth Proportional to 13,308,300.38, 18,365,446.77 and 7,196,728.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308,300.38 : 18,365,446.77 = 7,196,728.88 : x
2. Step 2: Convert to fraction form
   13,308,300.38/18,365,446.77 = 7,196,728.88/x
3. Step 3: Cross multiply
   13,308,300.38x = 18,365,446.77 × 7,196,728.88
4. Step 4: Simplify right side
   13,308,300.38x = 132,171,141,071,934.48
5. Step 5: Solve for x
   x = 132,171,141,071,934.48/13,308,300.38
6. Step 6: Final answer
   x = 9,931,481.66