Finding the Fourth Proportional to 12,864,061.25, 19,277,950.68 and 7,109,386.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,864,061.25 : 19,277,950.68 = 7,109,386.28 : x
2. Step 2: Convert to fraction form
   12,864,061.25/19,277,950.68 = 7,109,386.28/x
3. Step 3: Cross multiply
   12,864,061.25x = 19,277,950.68 × 7,109,386.28
4. Step 4: Simplify right side
   12,864,061.25x = 137,054,398,070,908.67
5. Step 5: Solve for x
   x = 137,054,398,070,908.67/12,864,061.25
6. Step 6: Final answer
   x = 10,654,053.60