Finding the Fourth Proportional to 10,930,256.80, 16,395,385.20 and 5,249,111.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,930,256.80 : 16,395,385.20 = 5,249,111.20 : x
2. Step 2: Convert to fraction form
   10,930,256.80/16,395,385.20 = 5,249,111.20/x
3. Step 3: Cross multiply
   10,930,256.80x = 16,395,385.20 × 5,249,111.20
4. Step 4: Simplify right side
   10,930,256.80x = 86,061,200,081,634.23
5. Step 5: Solve for x
   x = 86,061,200,081,634.23/10,930,256.80
6. Step 6: Final answer
   x = 7,873,666.80