Finding the Fourth Proportional to 13,309,890.71, 18,367,826.49 and 7,508,654.51

Step by Step Solution

1. Step 1: Write the proportion equation
   13,309,890.71 : 18,367,826.49 = 7,508,654.51 : x
2. Step 2: Convert to fraction form
   13,309,890.71/18,367,826.49 = 7,508,654.51/x
3. Step 3: Cross multiply
   13,309,890.71x = 18,367,826.49 × 7,508,654.51
4. Step 4: Simplify right side
   13,309,890.71x = 137,917,663,121,196.83
5. Step 5: Solve for x
   x = 137,917,663,121,196.83/13,309,890.71
6. Step 6: Final answer
   x = 10,362,043.25