Finding the Fourth Proportional to 10,538,678.72, 14,538,923.28 and 7,055,139.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,538,678.72 : 14,538,923.28 = 7,055,139.76 : x
2. Step 2: Convert to fraction form
   10,538,678.72/14,538,923.28 = 7,055,139.76/x
3. Step 3: Cross multiply
   10,538,678.72x = 14,538,923.28 × 7,055,139.76
4. Step 4: Simplify right side
   10,538,678.72x = 102,574,135,663,970.30
5. Step 5: Solve for x
   x = 102,574,135,663,970.30/10,538,678.72
6. Step 6: Final answer
   x = 9,733,111.56