Finding the Fourth Proportional to 9,269,621.48, 12,791,631.93 and 5,139,820.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,269,621.48 : 12,791,631.93 = 5,139,820.46 : x
2. Step 2: Convert to fraction form
   9,269,621.48/12,791,631.93 = 5,139,820.46/x
3. Step 3: Cross multiply
   9,269,621.48x = 12,791,631.93 × 5,139,820.46
4. Step 4: Simplify right side
   9,269,621.48x = 65,746,691,510,603.29
5. Step 5: Solve for x
   x = 65,746,691,510,603.29/9,269,621.48
6. Step 6: Final answer
   x = 7,092,705.10