Finding the Fourth Proportional to 9,269,620.48, 12,791,630.55 and 5,139,819.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,269,620.48 : 12,791,630.55 = 5,139,819.46 : x
2. Step 2: Convert to fraction form
   9,269,620.48/12,791,630.55 = 5,139,819.46/x
3. Step 3: Cross multiply
   9,269,620.48x = 12,791,630.55 × 5,139,819.46
4. Step 4: Simplify right side
   9,269,620.48x = 65,746,671,626,020.51
5. Step 5: Solve for x
   x = 65,746,671,626,020.51/9,269,620.48
6. Step 6: Final answer
   x = 7,092,703.72